CN112648213B

CN112648213B - Fan oscillating assembly and electric fan

Info

Publication number: CN112648213B
Application number: CN202110049048.1A
Authority: CN
Inventors: 陈宇强; 胡健兴; 刘建优; 王勇; 张超; 陈中兆
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2024-09-24
Anticipated expiration: 2041-01-14
Also published as: CN112648213A

Abstract

The invention relates to a fan head-shaking assembly and an electric fan, wherein the fan head-shaking assembly comprises a connector, a connecting rod and a shaft sleeve, a first supporting cylinder and a supporting column are arranged on the connector, a blind hole is formed in the connecting rod, the supporting column is inserted into the blind hole, the connecting rod can rotate relative to the connector by taking the axis of the supporting column as a rotating shaft, a cantilever is arranged on the shaft sleeve, the shaft sleeve is inserted into the first supporting cylinder, and the cantilever is limited on one side of the connecting rod, which is away from the supporting column, and is used for limiting the supporting column in the blind hole. Under the condition of meeting the functional requirement, the requirement on the manufacturing precision is reduced, and the manufacturing cost is reduced.

Description

Fan oscillating assembly and electric fan

Technical Field

The invention relates to the technical field of fan parts, in particular to a fan oscillating assembly and an electric fan.

Background

The fan swinging is generally realized by means of a crank-link mechanism, specifically, one end of a link is rotationally connected with a crank of a swinging motor, and the other end of the link is rotationally connected with a connector. When the swing motor is operated, the connecting rod rotates relative to the connector, so that the machine head connected with the swing motor swings. In order to realize the rotation connection relation between the connecting rod and the connector, the manufacturing precision requirement on the head shaking assembly part is high, so that the manufacturing cost is high.

Disclosure of Invention

Aiming at the problem that the manufacturing cost is high due to high requirements on manufacturing precision of a general head shaking assembly part, the invention provides a fan head shaking assembly and an electric fan so as to reduce the manufacturing cost.

The utility model provides a fan subassembly of shaking head, includes connector, connecting rod and axle sleeve, be equipped with first support section of thick bamboo and support column on the connector, be equipped with the blind hole on the connecting rod, the support column insert in the blind hole, make the connecting rod can for the connector with the axis of support column is the pivot rotation, be equipped with the cantilever on the axle sleeve, the axle sleeve is inserted in first support section of thick bamboo, the cantilever is spacing the connecting rod deviates from one side of support column, be used for with the support column is spacing in the blind hole.

The above-mentioned scheme provides a fan assembly of shaking head, the connecting rod passes through the blind hole and cooperates with the support column, works as the axle sleeve inserts in the first support section of thick bamboo, the cantilever is spacing to deviate from on the connecting rod one side of support column, thereby make the support column is spacing in the blind hole, then make the connecting rod can for the support column rotates, simultaneously the connecting rod can not break away from again the support column. In the process, the blind holes in the connecting rod are arranged only enough to enable the supporting columns to be inserted into the blind holes, and the connecting rod can rotate relative to the supporting columns. In other words, only the matching relationship between the blind hole and the support column needs to be considered. The cantilever only needs to be limited on one side of the connecting rod, which is away from the support column, without considering the plugging relation with the blind hole or the support column. Therefore, the requirement on the precision of the angle relation between the cantilever and the shaft sleeve is lower, and the requirement on the precision of the relative position between the cantilever and the connecting rod is lower. Therefore, under the condition of meeting the functional requirement, the requirement on the manufacturing precision is reduced, and the manufacturing cost is reduced.

In one embodiment, the plane in which the connecting rod rotates relative to the support column is a reference plane, and the axis of the support column is perpendicular to the reference plane.

In one embodiment, the opening of the blind hole is located at the bottom surface of the connecting rod, the part of the cantilever, which is limited on the connecting rod, is a limiting part, the limiting part is located in the axial direction of the supporting column, and the limiting part is in contact with the top surface of the connecting rod;

or the opening of blind hole is located the bottom surface of connecting rod, spacing part is located on the cantilever for spacing part on the connecting rod, spacing part is located in the axial of support column, spacing part with the top surface interval arrangement of connecting rod, spacing part with the interval between the connecting rod is less than the support column inserts the degree of depth in the blind hole.

In one embodiment, the outer circumferential surface of the support column is provided with a support protrusion, and the support protrusion is abutted against the bottom surface of the connecting rod.

In one embodiment, the cantilever is of a plate-shaped structure, the plane of the plate-shaped structure is perpendicular to the axis of the support column, a plurality of auxiliary holes are formed in the cantilever, a plurality of ribs which are staggered with each other are formed in the cantilever, and the auxiliary holes penetrate through the cantilever along the axial direction of the support column.

In one embodiment, the shaft sleeve is provided with a peripheral wall, the peripheral wall is sleeved outside the first supporting cylinder, and the peripheral wall is clamped with the first supporting cylinder.

In one embodiment, the first supporting cylinder is provided with a clamping protrusion, the peripheral wall is provided with a bayonet, and the clamping protrusion is clamped in the bayonet.

In one embodiment, the end surface of the support column inserted into the blind hole is provided with a groove.

The utility model provides an electric fan, includes main motor and foretell fan assembly of shaking head, the back shaft of main motor insert in the axle sleeve, the back shaft with buckle is connected between the axle sleeve, is used for restricting the back shaft for the axle sleeve is in the axial of axle sleeve is gone up to remove.

The technical scheme provides the electric fan, and by adopting the fan head shaking assembly in any embodiment, the requirement on the whole manufacturing precision is lower under the condition of realizing the basic head shaking function, so that the manufacturing cost is effectively reduced.

In one embodiment, the inner circumferential surface of the shaft sleeve is provided with a limit protrusion, the outer circumferential surface of the support shaft is provided with an annular groove, the limit protrusion is located in the annular groove, and the limit protrusion can slide in the annular groove along the circumferential direction of the annular groove.

In one embodiment, the end portion of the shaft sleeve, which is inserted into the first supporting cylinder first, is provided with a plurality of notches, the notches are distributed at intervals along the circumferential direction of the shaft sleeve, the end portion of the shaft sleeve is divided into a plurality of elastic petals, and each elastic petal is provided with a limiting protrusion.

In one embodiment, the device further comprises a swinging motor, a crank of the swinging motor is rotationally connected with the connecting rod, and the swinging motor and the main motor are relatively fixed in the swinging direction.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a fan head assembly according to the present embodiment;

FIG. 2 is an exploded view of the fan head assembly of FIG. 1;

FIG. 3 is a schematic view of a connecting rod according to the present embodiment;

fig. 4 is a schematic structural view of the sleeve according to the present embodiment.

Reference numerals illustrate:

10. a fan oscillating assembly; 11. a connector; 111. a support column; 1111. a supporting protrusion; 1112. a groove; 112. a first support cylinder; 1121. a snap-fit protrusion; 12. a connecting rod; 121. a blind hole; 122. a bottom surface; 123. a top surface; 124. a through hole; 13. a shaft sleeve; 131. a cantilever; 1311. an auxiliary hole; 132. a peripheral wall; 1321. a bayonet; 133. a limit protrusion; 134. a notch; 135. an elastic flap; 14. a main motor; 141. a support shaft; 1411. an annular groove; 142. a main shaft; 15. a swing motor; 151. and (3) a crank.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1 and 2, in one embodiment, a fan head assembly 10 is provided that includes a connector 11, a connecting rod 12, and a bushing 13. The connector 11 is provided with a support column 111. As shown in fig. 3, the connecting rod 12 is provided with a blind hole 121. The support column 111 is inserted into the blind hole 121, so that the connecting rod 12 can rotate relative to the connecting head 11 with the axis of the support column 111 as a rotation axis. Further, the connector 11 is further provided with a first supporting cylinder 112. The shaft sleeve 13 is provided with a cantilever 131, the shaft sleeve 13 is inserted into the first support cylinder 112, the cantilever 131 is limited at one side of the connecting rod 12, which is away from the support column 111, and is used for limiting the support column 111 in the blind hole 121.

According to the fan oscillating assembly 10 provided by the above scheme, the blind hole 121 on the connecting rod 12 is matched with the support column 111, when the shaft sleeve 13 is inserted into the first support cylinder 112, the cantilever 131 is limited on one side of the connecting rod 12, which is away from the support column 111, so that the support column 111 is limited in the blind hole 121, and then the connecting rod 12 can rotate relative to the support column 111, and meanwhile, the connecting rod 12 cannot be separated from the support column 111. In this process, the blind hole 121 of the connecting rod 12 is provided only so long as the supporting column 111 can be inserted therein, and the connecting rod 12 can rotate relative to the supporting column 111. In other words, only the matching relationship between the blind hole 121 and the support column 111 needs to be considered. The cantilever 131 only needs to be limited on the side of the connecting rod 12 away from the support column 111, and does not need to consider the plugging relation with the blind hole 121 or the support column 111. Therefore, the precision requirement on the angle relation between the cantilever 131 and the shaft sleeve 13 is low, and the precision requirement on the relative position between the cantilever 131 and the connecting rod 12 is low. Under the condition of meeting the functional requirement, the requirement on the manufacturing precision is reduced, and the manufacturing cost is reduced.

In addition, during the assembly process, only the support column 111 is accurately inserted into the blind hole 121 between the connecting rod 12 and the support column 111, and no matching relationship with higher precision requirements exists between the blind hole 121 and other components. When the shaft sleeve 13 is inserted into the first supporting cylinder 112, the cantilever 131 only needs to be limited on one side of the connecting rod 12 away from the supporting column 111, and no insertion or sleeving matching relationship exists between the cantilever 131 and the connecting rod 12 or the supporting column 111. Therefore, the assembly difficulty is reduced, and the assembly efficiency is improved.

Further, as shown in fig. 1 and 2, in one embodiment, the plane on which the link 12 rotates relative to the support column 111 is a reference plane, and the axis of the support column 111 is perpendicular to the reference plane. In other words, the link 12 rotates on a plane perpendicular to the axis of the support column 111, thereby driving the swing motor 15 at the other end of the link to swing.

Further, in one embodiment, as shown in fig. 2, the first support cylinder 112 is disposed coaxially with the support column 111. A support shaft 141 of the main motor 14 is inserted into the shaft housing 13, and when the swing motor 15 swings, the main motor 14 indirectly connected to the swing motor 15 rotates about the axis of the support shaft 141 as a rotation axis.

Specifically, the cantilever 131 may directly contact the link 12 to limit the link 12 on the support column 111; or the cantilever 131 is indirectly arranged with the connecting rod 12, but at a smaller distance, so that the support column 111 is at least partially inserted in the blind hole 121.

For example, in one embodiment. As shown in fig. 2 and 3, the opening of the blind hole 121 is located at the bottom surface 122 of the connecting rod 12. As shown in fig. 4, the portion of the cantilever 131 that is limited by the link 12 is a limiting portion. As shown in fig. 1 and 2, the limiting portion is located in an axial direction of the supporting column 111, and the limiting portion abuts against the top surface 123 of the connecting rod 12. In other words, the limiting portion is opposite to the position of the blind hole 121 on the connecting rod 12, so as to limit the supporting column 111 in the blind hole 121, thereby preventing the connecting rod 12 from being separated from the supporting column 111.

Or in another embodiment, as shown in fig. 2 and 3, the opening of the blind hole 121 is located at the bottom surface 122 of the connecting rod 12. As shown in fig. 4, the portion of the cantilever 131 that is limited by the link 12 is a limiting portion. As shown in fig. 1 and 2, the limiting portion is located in an axial direction of the support column 111. In this embodiment, however, the spacing portion is spaced from the top surface 123 of the connecting rod 12, and the spacing between the spacing portion and the connecting rod 12 is smaller than the depth of the support column 111 inserted into the blind hole 121.

The connecting rod 12 has a small moving space in the axial direction of the support column 111, but this moving space is insufficient to withdraw the support column 111 from the blind hole 121, so that it is still ensured that the connecting rod 12 is not separated from the support column 111.

Further, in one embodiment, as shown in fig. 2, the outer circumferential surface of the support column 111 is provided with a support protrusion 1111, and the support protrusion 1111 abuts against the bottom surface 122 of the connecting rod 12. When the link 12 is mounted on the support column 111, the bottom surface 122 of the link 12 abuts against the support boss 1111, and the link 12 is restrained between the support boss 1111 and the cantilever 131 without being separated from the support column 111. In other words, a length of a section of the support column 111 located near the bottom wall of the blind hole 121 on the support boss 1111 is not greater than the depth of the blind hole 121.

Further specifically, as shown in fig. 4, in one embodiment, the cantilever 131 is a plate-like structure that lies in a plane perpendicular to the axis of the support column 111. In other words, the side of the cantilever 131 facing the link 12 is the larger area side of the plate-like structure. The cantilever 131 is provided with a plurality of auxiliary holes 1311, a plurality of ribs which are mutually staggered are formed on the cantilever 131, and the auxiliary holes 1311 penetrate through the cantilever 131 along the axial direction of the supporting column 111.

Therefore, when the cantilever 131 contacts with the connecting rod 12, the contact area of the cantilever 131 and the connecting rod 12 is smaller, so that the friction force between the cantilever 131 and the connecting rod 12 is effectively reduced, and the smoothness of the rotation process of the connecting rod 12 is ensured.

Further, in one embodiment, as shown in fig. 2, a groove 1112 is provided on the end surface of the support column 111 inserted into the blind hole 121. Further reducing the contact area between the support column 111 and the connecting rod 12, and reducing friction.

Further specifically, as shown in fig. 2 and 4, the cantilever 131 is located at an end of the sleeve 13 remote from the bottom wall of the first support cylinder 112. When the shaft sleeve 13 is inserted into the first supporting cylinder 112, the cantilever 131 is suspended outside the first supporting cylinder 112 and extends to a side of the connecting rod 12 away from the supporting column 111, so as to limit the connecting rod 12 on the supporting column 111.

Further, as shown in fig. 2 and 4, in one embodiment, a peripheral wall 132 is disposed outside the sleeve 13, the peripheral wall 132 is disposed outside the first support cylinder 112, and the peripheral wall 132 is clamped to the first support cylinder 112.

Therefore, after the shaft sleeve 13 is inserted into the first supporting cylinder 112, the shaft sleeve 13 cannot move relative to the first supporting cylinder 112 in the axial direction of the first supporting cylinder 112, so that the cantilever 131 is indirectly limited from moving in the axial direction of the supporting column 111, and the cantilever 131 is ensured to always limit the connecting rod 12 on the supporting column 111. The inner and outer sides of the first support cylinder 112 are respectively contacted with the shaft sleeve 13 and the peripheral wall 132, so that the shaft sleeve 13 is prevented from being inclined relative to the first support cylinder 112 in the axial direction.

Specifically, as shown in fig. 2, in one embodiment, a fastening protrusion 1121 is disposed outside the first supporting cylinder 112, a bayonet 1321 is disposed on the peripheral wall 132, and the fastening protrusion 1121 is fastened in the bayonet 1321, so as to implement a fastening connection between the peripheral wall 132 and the first supporting cylinder 112.

Further, assuming that the side of the fan blade on the connector 11 is in front of the connector 11, two fastening protrusions 1121 may be provided, and the two fastening protrusions 1121 are respectively located on the front and rear sides of the first supporting cylinder 112. So that when the housing is provided at the front side of the connector 11, the peripheral wall 132 can be restrained from moving in the front-rear direction with respect to the first support cylinder 112 by the housing, thereby ensuring more reliable engagement of the snap projections 1121 with the bayonet 1321.

Further, in another embodiment, an electric fan is provided, comprising the fan head assembly 10 described above.

According to the electric fan provided by the scheme, by adopting the fan oscillating assembly 10 in any embodiment, the requirement on the whole manufacturing precision is low under the condition of realizing the basic oscillating function, so that the manufacturing cost is effectively reduced.

Further, as shown in fig. 1 and 2, in one embodiment, the electric fan further includes a main motor 14, a support shaft 141 of the main motor 14 is inserted into the shaft sleeve 13, and the support shaft 141 is in snap connection with the shaft sleeve 13, so as to limit the support shaft 141 to move relative to the shaft sleeve 13 in the axial direction of the shaft sleeve 13.

When the main motor 14 is mounted on the joint head 11, the shaft sleeve 13 is not movable relative to the first support cylinder 112 in the axial direction of the first support cylinder 112, and the support shaft 141 is not movable relative to the shaft sleeve 13 in the axial direction of the shaft sleeve 13, thereby indirectly limiting the displacement of the main motor 14 and the joint head 11 in the axial direction of the first support cylinder 112.

Further specifically, in one embodiment, as shown in fig. 2 and 4, the inner circumferential surface of the shaft sleeve 13 is provided with a limit projection 133, the outer circumferential surface of the support shaft 141 is provided with an annular groove 1411, and the limit projection 133 is located in the annular groove 1411, so that the support shaft 141 cannot move in the axial direction of the shaft sleeve 13 with respect to the shaft sleeve 13. But the stopper projection 133 is slidable in the annular groove 1411 in the circumferential direction of the annular groove 1411. Therefore, when the connecting rod 12 rotates relative to the support column 111, the main motor 14 can rotate with the axis of the support shaft 141 as a rotating shaft, so as to realize the oscillating function of the fan.

More specifically, as shown in fig. 2 and 4, in one embodiment, a plurality of notches 134 are provided on an end portion of the sleeve 13 that is inserted into the first support cylinder 112, the plurality of notches 134 are distributed at intervals along a circumferential direction of the sleeve 13, and a plurality of elastic flaps 135 are divided at the end portion of the sleeve 13. Each elastic flap 135 is provided with the limiting protrusion 133.

In the assembly process, the supporting shaft 141 is inserted into the shaft sleeve 13, the elastic flap 135 is pressed outwards by the supporting shaft 141 until the limiting protrusion 133 is opposite to the annular groove 1411, and the elastic flap 135 elastically resets to clamp the limiting protrusion 133 in the annular groove 1411. Then, the shaft sleeve 13 is inserted into the first supporting cylinder 112, and the elastic flap 135 cannot be elastically deformed outwards under the limiting action of the first supporting cylinder 112, so that the limiting between the supporting shaft 141 and the shaft sleeve 13 is more reliable.

Further, as shown in fig. 1 and 2, in one embodiment, the electric fan further includes a swing motor 15, a crank 151 of the swing motor 15 is rotatably connected to the link 12, and the swing motor 15 and the main motor 14 are relatively fixed in a swing direction.

When the swing motor 15 is operated, the link 12 is rotated with respect to the support column 111, so that the swing motor 15 swings with respect to the support column 111. The main motor 14 fixed to the swing motor 15 in the swing direction rotates around the axis of the supporting shaft 141, so that the fan blades on the main shaft 142 of the main motor 14 swing relative to the connector 11.

Specifically, as shown in fig. 2 and 3, a through hole 124 is provided at one end of the connecting rod 12 rotatably connected to the crank 151, and the connecting rod 12 and the crank 151 are rotatably connected together by a connecting member such as a screw.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The fan oscillating assembly is characterized by comprising a connector, a connecting rod and a shaft sleeve, wherein a first supporting cylinder and a supporting column are arranged on the connector, a blind hole is formed in the connecting rod, the supporting column is inserted into the blind hole, the connecting rod can rotate relative to the connector by taking the axis of the supporting column as a rotating shaft, a cantilever is arranged on the shaft sleeve, the shaft sleeve is inserted into the first supporting cylinder, and the cantilever is limited on one side of the connecting rod, which is away from the supporting column, and is used for limiting the supporting column in the blind hole; the cantilever is of a plate-shaped structure, and the plane of the plate-shaped structure is perpendicular to the axis of the support column.

2. The fan head assembly of claim 1 wherein the plane in which the link rotates relative to the support post is a datum plane, and wherein the axis of the support post is perpendicular to the datum plane.

3. The fan head assembly of claim 1, wherein the opening of the blind hole is positioned on the bottom surface of the connecting rod, the part of the cantilever, which is limited on the connecting rod, is a limiting part, the limiting part is positioned on the axial direction of the supporting column, and the limiting part is in contact with the top surface of the connecting rod;

4. The fan head assembly of claim 3, wherein the outer circumferential surface of the support post is provided with a support protrusion, and the support protrusion abuts against the bottom surface of the connecting rod.

5. The fan head assembly of claim 1 wherein the cantilever has a plurality of auxiliary holes formed therein, and wherein the cantilever has a plurality of ribs formed thereon that are staggered with respect to each other, the auxiliary holes being disposed through the cantilever in an axial direction of the support post.

6. The fan head assembly of any one of claims 1 to 5 wherein a peripheral wall is provided outside the sleeve, the peripheral wall being provided outside the first support barrel, the peripheral wall being snap-fit to the first support barrel.

7. The fan head assembly of claim 6, wherein the first support barrel is provided with a snap tab thereon, and the peripheral wall is provided with a bayonet in which the snap tab snaps.

8. The fan head assembly of any one of claims 1 to 5 wherein the end face of the support post that is inserted into the blind hole is provided with a recess.

9. An electric fan comprising a main motor and a fan oscillating assembly according to any one of claims 1 to 8, wherein a support shaft of the main motor is inserted into the shaft sleeve, and the support shaft is in snap connection with the shaft sleeve for limiting movement of the support shaft relative to the shaft sleeve in an axial direction of the shaft sleeve.

10. The electric fan according to claim 9, wherein an inner peripheral surface of the shaft sleeve is provided with a limit projection, an outer peripheral surface of the support shaft is provided with an annular groove, the limit projection is located in the annular groove, and the limit projection is slidable in the annular groove in a circumferential direction of the annular groove.

11. The electric fan as claimed in claim 10, wherein a plurality of notches are provided at an end portion of the shaft sleeve inserted into the first supporting cylinder, the notches are spaced apart along a circumferential direction of the shaft sleeve, a plurality of elastic flaps are divided at the end portion of the shaft sleeve, and the limiting protrusions are provided on the elastic flaps.

12. An electric fan as claimed in any one of claims 9 to 11, further comprising a wobble motor, a crank of the wobble motor being rotatably connected to the link, the wobble motor and the main motor being relatively fixed in a direction of shaking the head.