CN214304473U

CN214304473U - Fan connecting head assembly and electric fan

Info

Publication number: CN214304473U
Application number: CN202120101696.2U
Authority: CN
Inventors: 刘建优; 胡健兴; 张超; 柏长升; 陈宇强; 王勇
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: 2021-09-28
Anticipated expiration: 2031-01-14

Abstract

The utility model relates to a fan connector subassembly and electric fan, fan connector subassembly include connector and connecting rod, are equipped with the first support section of thick bamboo that is used for supporting the connecting rod on the connector, are equipped with spacing plug-in components and cover the first spacing section of thick bamboo outside spacing plug-in components on the connecting rod, and the first spacing section of thick bamboo forms annular slot with the coaxial setting of spacing plug-in components, and the interval between first spacing section of thick bamboo and the spacing plug-in components, and a support section of thick bamboo can be inserted in annular slot. When the connecting rod rotates for first a support section of thick bamboo, the inside and outside both sides of first a support section of thick bamboo can be spacing by spacing plug-in components and first spacing section of thick bamboo respectively, avoid first a support section of thick bamboo to take place the skew or the swing of axial for spacing plug-in components or first spacing section of thick bamboo to avoid long-time use the spacing not reliable condition that appears cracked even of junction of back connecting rod and connector. The connecting strength between the connector and the connecting rod is improved, and the head swinging function can still be normally implemented after long-time use.

Description

Fan connecting head assembly and electric fan

Technical Field

The utility model relates to a fan spare part technical field especially relates to fan connector subassembly and electric fan.

Background

The function of swaying of fan aircraft nose is realized by crank link mechanism, is equipped with the support piece that supports the connecting rod on the connector with the aircraft nose support fuselage, the other end of connecting rod and the crank connection on the motor that sways to when the motor operation sways, the aircraft nose of being connected with the motor that sways can be for connector and fuselage swing. The connector both need provide the support for the connecting rod, and the connecting rod needs can rotate for the connector again simultaneously to the guarantee connects can the swing. However, as the service life is prolonged, the joint between the connector and the connecting rod is easily damaged, so that the head swinging function cannot be normally implemented.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to along with the extension of live time, the junction between connector and the connecting rod is easy to appear damaging, leads to the problem of yaw function inefficacy, has provided a fan connector subassembly and electric fan to improve the intensity of being connected between connector and the connecting rod, ensure also that the yaw function still can normally be implemented after long-time the use.

The utility model provides a fan connector subassembly, includes connector and connecting rod, be equipped with on the connector and be used for the support the first a support section of thick bamboo of connecting rod, be equipped with spacing plug-in components and cover on the connecting rod the outer first spacing section of thick bamboo of spacing plug-in components, first spacing section of thick bamboo with the coaxial setting of spacing plug-in components, just first spacing section of thick bamboo with the interval forms annular slot between the spacing plug-in components, a support section of thick bamboo can insert in annular slot, make the connecting rod can with the center pin of spacing plug-in components for first a support section of thick bamboo rotates.

According to the technical scheme, the fan connecting head assembly is characterized in that the connecting rod is provided with the limiting plug-in component and the first limiting barrel, the first supporting barrel is inserted into the annular slot, so that when the connecting rod rotates relative to the first supporting barrel, the inner side and the outer side of the first supporting barrel can be limited by the limiting plug-in component and the first limiting barrel respectively, the first supporting barrel is prevented from being inclined or swinging axially relative to the limiting plug-in component or the first limiting barrel, and therefore the situation that the connecting rod is not reliable enough or even broken at the connecting position of the connecting head after being used for a long time is effectively avoided. The strength of connection between the connector and the connecting rod is improved, and the head swinging function can still be normally implemented after long-time use.

In one embodiment, the plane on which the connecting rod rotates relative to the first supporting cylinder is a reference plane, and the axis of the limiting insert is perpendicular to the reference plane.

In one embodiment, the outer peripheral surface of the limiting insert is attached to the inner peripheral surface of the first supporting cylinder, the limiting insert can rotate relative to the first supporting cylinder, the outer peripheral surface of the first supporting cylinder is attached to the inner peripheral surface of the first limiting cylinder, and the first supporting cylinder can rotate relative to the first limiting cylinder.

In one embodiment, the limiting insert is of a rod-shaped structure, or the limiting insert comprises a second limiting barrel coaxially arranged with the first limiting barrel, and the annular slot is formed by spacing the first limiting barrel and the second limiting barrel.

In one embodiment, the connecting device further comprises a shaft sleeve, a supporting piece used for supporting the main motor is arranged on the connecting head, the shaft sleeve and the supporting piece are sleeved with each other, the shaft sleeve is provided with a cantilever, and when the shaft sleeve and the supporting piece are assembled in place, the cantilever presses the connecting rod on the first supporting cylinder.

In one embodiment, the limiting insert and the first limiting cylinder are arranged on the bottom surface of the connecting rod, when the shaft sleeve and the supporting part are assembled in place, the cantilever is pressed on the top surface of the connecting rod, and the position where the cantilever is pressed on the connecting rod is located in the axial direction of the first supporting cylinder.

In one embodiment, the top surface of the connecting rod is provided with a limiting protrusion, a position, corresponding to the limiting protrusion, on the cantilever is provided with an abutting arc surface, the abutting arc surface is coaxially arranged with the first supporting cylinder, and when the connecting rod rotates, the limiting protrusion moves along the abutting arc surface and keeps in contact with the abutting arc surface.

In one embodiment, one end of the cantilever, which is pressed against the connecting rod, is a pressing part, and the abutting cambered surface is an end surface of the pressing part;

or, one end of the cantilever, which is pressed on the connecting rod, is a pressing part, the pressing part is provided with an arc-shaped groove, the arc-shaped groove and the first supporting cylinder are coaxially arranged, the limiting protrusion is positioned in the arc-shaped groove, and the pressing arc surface is a side wall of the arc-shaped groove.

In one embodiment, the supporting member and the first supporting cylinder are coaxially arranged, the supporting member includes a second supporting cylinder, the shaft sleeve is inserted into the second supporting cylinder, a notch is formed in an opening end of the second supporting cylinder, a rotation stopping protrusion is arranged on the cantilever at a position corresponding to the notch, and the rotation stopping protrusion is located in the notch.

In one embodiment, the sleeve is externally provided with a peripheral wall which is sleeved outside the second support cylinder, and the second support cylinder is clamped between the sleeve and the peripheral wall to limit the sleeve from moving relative to the second support cylinder in the axial direction of the second support cylinder.

An electric fan comprises the fan connecting head assembly.

According to the electric fan, the fan connecting head assembly in any one of the embodiments is adopted, so that the first supporting cylinder can be reliably limited between the limiting plug-in component and the first limiting cylinder, and the situation that the connecting position of the connecting rod and the connecting head is not limited reliably enough, and the connecting rod is inclined in the axial direction, sways or even breaks can be effectively avoided even if the electric fan is used for a long time. The strength of being connected between improvement connector and the connecting rod ensures that also the yaw function can still normally be implemented after long-time use.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

FIG. 2 is a partial cross-sectional view of the fan coupling head assembly of FIG. 1;

FIG. 3 is a schematic structural diagram of the connecting rod of the present embodiment;

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

fig. 5 is a schematic structural diagram of the connecting head according to this embodiment.

Description of reference numerals:

10. a fan coupling head assembly; 11. a connector; 111. a first support cylinder; 112. a support member; 1121. a notch; 12. a connecting rod; 121. a limiting plug-in; 122. a first limiting cylinder; 123. an annular slot; 124. a bottom surface; 125. a top surface; 126. a limiting bulge; 13. a shaft sleeve; 131. a cantilever; 132. a pressing part; 1321. abutting against the arc surface; 133. a peripheral wall.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying 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, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 and 2, in one embodiment, a fan connector assembly 10 is provided, including a connector 11 and a link 12. As shown in fig. 1, 2 and 5, a first supporting cylinder 111 for supporting the connecting rod 12 is disposed on the connecting head 11. As shown in fig. 2 and 3, a limiting plug-in 121 and a first limiting cylinder 122 sleeved outside the limiting plug-in 121 are arranged on the connecting rod 12, the first limiting cylinder 122 and the limiting plug-in 121 are coaxially arranged, and an annular slot 123 is formed between the first limiting cylinder 122 and the limiting plug-in 121 at an interval. As shown in fig. 2, the first support cylinder 111 can be inserted into the annular insertion groove 123, so that the connecting rod 12 can rotate relative to the first support cylinder 111 with the axis of the position-limiting plug 121 as a rotation axis.

According to the fan connecting head assembly 10 provided by the above scheme, the connecting rod 12 is provided with the limiting plug-in component 121 and the first limiting cylinder 122, and the first supporting cylinder 111 is inserted into the annular slot 123, so that when the connecting rod 12 rotates relative to the first supporting cylinder 111, the inner side and the outer side of the first supporting cylinder 111 are limited by the limiting plug-in component 121 and the first limiting cylinder 122 respectively, and the first supporting cylinder 111 is prevented from being inclined or swung axially relative to the limiting plug-in component 121 or the first limiting cylinder 122, so that the situation that the connecting position of the connecting rod 12 and the connecting head 11 is limited reliably and even broken after being used for a long time is effectively avoided. So as to improve the connection strength between the connector 11 and the connecting rod 12 and ensure that the head swinging function can still be normally implemented after long-time use.

In addition, the limit between the connecting rod 12 and the connecting head 11 is performed without screws, and the limit is performed by directly inserting the first supporting cylinder 111 into the annular slot 123, so that the assembling process is simple and convenient.

When the fan connecting head assembly 10 is applied to an electric fan, one end of the connecting rod 12 is rotatably connected to the first supporting cylinder 111 through the limiting plug-in 121 and the first limiting cylinder 122, and the other end of the connecting rod 12 is connected to a crank on a swing motor. And because the connector 11 is connected with the machine body, the connector 11 can only rotate in the vertical direction relative to the machine body, so that the head of the fan head can be raised or lowered, and the fan head cannot swing in the horizontal direction. Therefore, when the swing motor operates, the connecting rod 12 rotates relative to the connecting head 11, and the first supporting cylinder 111 rotates by taking the axis of the limiting plug-in 121 as a rotating shaft under the limiting and guiding actions of the limiting plug-in 121 and the first limiting cylinder 122.

Further specifically, as shown in fig. 1 and 2, in one embodiment, a plane in which the connecting rod 12 rotates relative to the first supporting cylinder 111 is a reference plane, and an axis of the limiting insert 121 is perpendicular to the reference plane.

In other words, the plane of the link 12 when rotating relative to the connecting head 11 is perpendicular to the axis of the position-limiting insert 121. The connecting rod 12 rotates by using the axis of the limiting plug-in 121 as a rotating shaft.

Specifically, in one embodiment, the curb inserts 121 are rod-like structures.

Alternatively, in another embodiment, as shown in fig. 3, the limiting insert 121 includes a second limiting cylinder coaxially disposed with the first limiting cylinder 122, and the annular slot 123 is formed by the first limiting cylinder 122 and the second limiting cylinder at a distance.

Based on the fact that the limiting insert 121 is inserted into the first supporting cylinder 111 and needs to provide limiting and guiding effects for the first supporting cylinder 111, the limiting insert 121 is set to include the second limiting cylinder, so that the outer diameter of the second limiting cylinder can be conveniently set according to the inner diameter of the first supporting cylinder 111, the outer peripheral surface of the second limiting cylinder can possibly fit with the inner peripheral surface of the first supporting cylinder 111, and relative rotation between the outer peripheral surface of the second limiting cylinder and the inner peripheral surface of the first supporting cylinder 111 is not affected.

Further, in one embodiment, as shown in fig. 2, an outer circumferential surface of the stopper insert 121 is attached to an inner circumferential surface of the first support cylinder 111, and the stopper insert 121 is capable of rotating relative to the first support cylinder 111. The outer circumferential surface of the first support cylinder 111 is attached to the inner circumferential surface of the first stopper cylinder 122, and the first support cylinder 111 is rotatable with respect to the first stopper cylinder 122.

Thereby further avoiding the situation that the first supporting cylinder 111 is inclined axially relative to the limiting insert 121 or the first limiting cylinder 122.

Further, in one embodiment, as shown in fig. 1 and 2, the fan attachment head assembly 10 further includes a boss 13. As shown in fig. 5, a supporting member 112 for supporting the main motor is disposed on the connecting head 11, and the shaft sleeve 13 and the supporting member 112 are sleeved with each other. As shown in fig. 4, the bushing 13 is provided with a cantilever 131, and when the bushing 13 is assembled with the support 112 in place, as shown in fig. 1 and 2, the cantilever 131 presses the connecting rod 12 against the first support cylinder 111. It is ensured that the first support cylinder 111 is reliably seated in the annular insertion groove 123 without being drawn out from the annular groove in the axial direction of the annular insertion groove 123.

The connecting rod 12 and the connecting head 11 are limited and locked by the cantilever 131 directly in the process of mounting the shaft sleeve 13 without screws, so that the convenience of assembly is improved. Based on the insertion of the first supporting cylinder 111 in the annular slot 123, the rotational connection between the connecting rod 12 and the connecting head 11 will not fall off under the condition that the cantilever 131 does not withdraw the pressing force on the connecting rod 12, and the connection is more reliable.

Specifically, when the shaft sleeve 13 and the supporting member 112 are assembled in place, the shaft sleeve 13 and the supporting member 112 are clamped, so that the shaft sleeve 13 cannot move relative to the supporting member 112 in the axial direction of the shaft sleeve 13, and the connecting rod 12 is pressed on the connecting head 11.

Further, in one embodiment, the support 112 is disposed coaxially with the first support cylinder 111. When the sleeve 13 is clamped between the sleeve 13 and the support 112 so that the sleeve 13 cannot move in the axial direction of the support 112, the cantilever 131 cannot move in the axial direction of the first support cylinder 111 any more relative to the connecting rod 12, thereby ensuring that the connecting rod 12 is pressed against the connecting head 11.

Further specifically, in one embodiment, as shown in fig. 1 to 3, the position limiting insert 121 and the first position limiting cylinder 122 are disposed on the bottom surface 124 of the connecting rod 12, when the bushing 13 and the supporting member 112 are assembled in place, the cantilever 131 is pressed against the top surface 125 of the connecting rod 12, and the position where the cantilever 131 is pressed against the connecting rod 12 is located in the axial direction of the first supporting cylinder 111. Thereby pressing the connecting rod 12 against the first support cylinder 111.

Optionally, in another embodiment, an auxiliary protrusion may be disposed on the outer peripheral surface of the first limiting cylinder 122, and the cantilever 131 is pressed on a surface of the auxiliary protrusion, which faces away from the connecting head 11, so as to indirectly press the connecting rod 12 on the first supporting cylinder 111.

Further, in an embodiment, as shown in fig. 1 to 3, a limiting protrusion 126 is provided on the top surface 125 of the connecting rod 12, as shown in fig. 4, an abutting arc surface 1321 is provided on the cantilever 131 at a position corresponding to the limiting protrusion 126, the abutting arc surface 1321 is coaxially disposed with the first supporting cylinder 111, and when the connecting rod 12 rotates, the limiting protrusion 126 moves along the abutting arc surface 1321 and keeps in contact with the abutting arc surface 1321.

The contact between the limit projection 126 and the abutment cambered surface 1321 also plays a role in limiting the first support cylinder 111 from being skewed in the axial direction with respect to the limit insert 121 or the first limit cylinder 122 to some extent. And the force borne by the connecting position of the connecting rod 12 and the connecting head 11 is reduced.

Specifically, in one embodiment, as shown in fig. 4, one end of the cantilever 131 pressed against the connecting rod 12 is a pressing portion 132, and the abutment cambered surface 1321 is an end surface of the pressing portion 132. In other words, the end surface of the pressing portion 132 is directly set to be arc-shaped for abutting against the limiting protrusion 126.

Or, in another embodiment, one end of the cantilever 131 pressed against the connecting rod 12 is a pressing portion 132, and the pressing portion 132 is provided with an arc-shaped groove, and the arc-shaped groove is coaxially arranged with the first supporting cylinder 111. The limiting protrusion 126 is located in the arc-shaped groove, and the abutting arc surface 1321 is a side wall of the arc-shaped groove.

When the connecting rod 12 rotates, the limiting protrusion 126 moves in the arc-shaped groove, and the arc-shaped groove plays a role in limiting and guiding the limiting protrusion 126, so that the first supporting cylinder 111 is further prevented from being inclined in the axial direction relative to the limiting plug-in 121 or the first limiting cylinder 122, and the force borne by the connecting position of the connecting rod 12 and the connecting head 11 is reduced.

More specifically, in one embodiment, as shown in fig. 5, the support member 112 includes a second support cylinder, as shown in fig. 1 and 2, in which the bushing 13 is inserted.

The second support cylinder can be clamped with the bushing 13 to limit the axial movement of the bushing 13 relative to the second support cylinder in the second support cylinder axial direction, so as to ensure that the cantilever 131 presses the connecting rod 12 against the first support cylinder 111.

Specifically, in some embodiments, the axis of the second support cylinder is parallel to the axis of the first support cylinder 111.

Further, as shown in fig. 5, in an embodiment, an opening end of the second supporting cylinder is provided with a notch 1121, and a rotation stopping protrusion is provided on the cantilever 131 at a position corresponding to the notch 1121, and the rotation stopping protrusion is located in the notch 1121.

Therefore, when the bushing 13 is installed in the second support cylinder, the bushing 13 cannot rotate relative to the second support cylinder, and the orientation of the cantilever 131 relative to the second support cylinder does not change, so that the cantilever 131 is pressed against the connecting rod 12 at all times.

Further, as shown in fig. 4, in one embodiment, the shaft sleeve 13 is externally provided with a peripheral wall 133, and the peripheral wall 133 is sleeved outside the second support cylinder. As shown in fig. 1 and 2, the second support cylinder is clamped between the sleeve 13 and the peripheral wall 133, and the sleeve 13 is restricted from moving in the axial direction relative to the second support cylinder.

Further, in another embodiment, an electric fan is provided, which comprises the above fan connector assembly 10.

According to the electric fan provided by the scheme, by adopting the fan connecting head assembly 10 in any one of the embodiments, the first supporting cylinder 111 can be reliably limited between the limiting plug-in 121 and the first limiting cylinder 122, and the situation that the limit of the joint of the connecting rod 12 and the connecting head 11 is not reliable enough, and the situation that the joint is inclined, swayed or even broken in the axial direction can be effectively avoided even if the electric fan is used for a long time. The strength of the connection between the connector 11 and the connecting rod 12 is improved, and the head swinging function can still be normally implemented after long-time use.

In the description of the present invention, it is to 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", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a fan connecting head subassembly, a serial communication port, includes connector and connecting rod, be equipped with on the connector and be used for supporting the first a support section of thick bamboo of connecting rod, be equipped with spacing plug-in components and cover on the connecting rod the outer first spacing section of thick bamboo of spacing plug-in components, first spacing section of thick bamboo with the coaxial setting of spacing plug-in components, just first spacing section of thick bamboo with the interval forms annular slot between the spacing plug-in components, a support section of thick bamboo can insert in the annular slot, make the connecting rod can with the center pin of spacing plug-in components for first a support section of thick bamboo rotates.

2. The fan coupling head assembly of claim 1, wherein a plane in which the link rod rotates with respect to the first support cylinder is a reference plane, and an axis of the restraining insert is perpendicular to the reference plane.

3. The fan coupling head assembly of claim 1, wherein an outer peripheral surface of the retaining insert engages an inner peripheral surface of the first support barrel, and wherein the retaining insert is rotatable relative to the first support barrel, wherein an outer peripheral surface of the first support barrel engages an inner peripheral surface of the first retaining barrel, and wherein the first support barrel is rotatable relative to the first retaining barrel.

4. The fan coupling head assembly of claim 1, wherein the retaining insert is of a rod-like configuration, or the retaining insert includes a second retaining cylinder disposed coaxially with the first retaining cylinder, the first retaining cylinder being spaced from the second retaining cylinder to form the annular slot.

5. The fan joint assembly as claimed in any one of claims 1 to 4, further comprising a bushing, wherein the joint is provided with a support member for supporting the main motor, the bushing and the support member are sleeved with each other, the bushing is provided with a cantilever, and when the bushing and the support member are assembled in place, the cantilever presses the connecting rod against the first support cylinder.

6. The fan coupling head assembly of claim 5, wherein the retainer insert and the first retainer cylinder are disposed on a bottom surface of the link, and when the boss and the support member are assembled in place, the cantilever arm presses against a top surface of the link, and a position at which the cantilever arm presses against the link is located in an axial direction of the first support cylinder.

7. The fan joint assembly of claim 6, wherein the top surface of the connecting rod is provided with a limiting protrusion, the cantilever is provided with an abutting arc surface at a position corresponding to the limiting protrusion, the abutting arc surface is coaxial with the first supporting cylinder, and the limiting protrusion moves along the abutting arc surface and keeps in contact with the abutting arc surface when the connecting rod rotates.

8. The fan connecting head assembly as claimed in claim 7, wherein one end of the cantilever pressed against the connecting rod is a pressing portion, and the abutting arc surface is an end surface of the pressing portion;

9. The fan joint assembly as claimed in claim 5, wherein the supporting member is coaxially disposed with the first supporting cylinder, the supporting member includes a second supporting cylinder, the shaft sleeve is inserted into the second supporting cylinder, an opening end of the second supporting cylinder is provided with a notch, and a rotation stopping protrusion is provided on the cantilever at a position corresponding to the notch, and the rotation stopping protrusion is located in the notch.

10. The fan coupling head assembly of claim 9, wherein said sleeve has a peripheral wall formed thereon, said peripheral wall being fitted over said second support sleeve, said second support sleeve being captured between said sleeve and said peripheral wall to limit axial movement of said sleeve relative to said second support sleeve in an axial direction of said second support sleeve.

11. An electric fan comprising the fan joint assembly of any one of claims 1 to 10.