CN219492703U

CN219492703U - Connecting arm, fan assembly and fan

Info

Publication number: CN219492703U
Application number: CN202090000917.0U
Authority: CN
Inventors: 陈伟豪; 庄荣华; 张恒菲
Original assignee: Dongguan Diepin Technology Co ltd
Current assignee: Dongguan Diepin Technology Co ltd
Priority date: 2019-10-14
Filing date: 2020-10-13
Publication date: 2023-08-08
Anticipated expiration: 2030-10-13
Also published as: WO2021073509A1

Abstract

The utility model provides a linking arm (6), the fan head, fan subassembly and fan, this fan subassembly includes fan head and linking arm (6), the fan head is installed on bracing piece (4) of base subassembly (2) through linking arm (6), wherein, the fan head is including preceding cover (8) to back in the past, flabellum subassembly (11), motor assembly (10) and back cover (7), preceding cover (8) are connected with back cover (7) detachable, back cover (7) are all detachable to be fixed on linking arm (6) with motor assembly (10), motor assembly (10) can drive flabellum subassembly (11) rotation, and motor assembly and flabellum subassembly (11) detachable connection. Front shroud (8), motor assembly (10), flabellum subassembly (11) and back shroud (7) all can dismantle in the fan assembly, and then can carry out solitary washing to these parts, and it is convenient to wash, is favorable to avoiding the dust on the fan assembly to be blown out by the air current and leads to external environment to receive the influence to the very trouble technical problem of fan washing has been solved.

Description

Connecting arm, fan assembly and fan

Technical Field

The invention relates to a connecting arm, a fan assembly and a fan, and belongs to the technical field of small household appliances.

Background

Various small home appliances such as a desk lamp or an electric fan are used in daily life. For example, an electric fan, which is also called an electric fan, a fan or a fan, is a household appliance which drives blades to rotate by using a motor to accelerate air circulation, and is widely used in places such as families, offices, shops, hospitals, hotels and the like.

The electric fan mainly comprises a fan main body, a supporting mechanism, a base and other parts, wherein the fan main body is usually rotatably connected with the supporting mechanism, so that the fan main body can at least rotate at a certain angle relative to the supporting mechanism in a horizontal plane, and can supply air to a larger area. Specifically, the fan main body generally includes a front cover, a fan blade, a motor, and a rear cover from front to rear, wherein the fan blade is in transmission connection with an output shaft of the motor mounted on the rear cover, and a mount for hinging with the support mechanism is provided on the back surface of the rear cover.

However, the conventional electric fan is very troublesome in that it needs to be cleaned, and it is necessary to improve it so as to facilitate the cleaning.

Disclosure of Invention

A first aspect of the present invention provides a connection arm for mounting the fan housing to a support bar of a base assembly, comprising: the two ends of the connecting arm body are respectively connected with the supporting rod and the fan cover; the connecting arm body is formed with a wire slot for accommodating a wire.

The technical effects of the first aspect of the present invention are: the connecting arm is used as a middle piece, one end of the connecting arm is connected with the supporting rod, and the other end of the connecting arm is connected with the fan cover, so that the fan cover is installed on the supporting rod. And be equipped with the wire casing on the linking arm body, the wire can be accomodate in the wire casing to avoid the scattered unordered distribution of wire, and then be favorable to subsequent management or maintenance.

A second aspect of the present invention provides a fan head comprising: a fan cover; the fan blade assembly is arranged in the fan cover; a mounting table fixed relative to the fan housing, the mounting table including a mounting post extending forwardly; the motor assembly comprises a motor stator and a motor rotor used for driving the fan blade assembly to rotate, the motor stator is detachably fixed on the mounting column, the motor rotor is in running fit with the motor stator, and the motor rotor is detachable from the motor stator.

The technical effects of the second aspect of the present invention are: the fan head comprises a fan cover, a fan blade assembly, a motor assembly and a mounting table fixed relative to the fan cover, wherein the motor assembly comprises a motor rotor and a motor stator, and the motor rotor can drive the fan blade assembly to rotate so as to form air flow and send out of the fan cover, thereby reducing the temperature of the surrounding environment; be equipped with the erection column on the mount table, motor stator detachable assembly is on the erection column, then motor stator can be with the erection column separation, and motor assembly can dismantle from the mount table, and then can wash alone motor assembly, and the clearance is convenient.

A third aspect of the invention provides a fan assembly comprising a connecting arm as provided in the first aspect of the invention and a fan head as provided in the second aspect of the invention.

The technical effects of the third aspect of the present invention are: the fan head and the connecting arm form a whole, namely, the fan assembly, so that the fan assembly can be mounted on the base assembly through the connecting arm.

A fourth aspect of the present invention provides a fan comprising a base assembly and a fan assembly provided in the third aspect of the present invention, the fan assembly being rotatably mounted on a support bar of the base assembly.

The technical effects of the fourth aspect of the present invention are: the fan assembly is rotatably coupled to the support bar of the base assembly such that the fan assembly can rotate relative to the support bar and the base assembly. When the rotation axis is parallel to the horizontal plane, the fan assembly can turn over a certain angle relative to the base assembly, so that air flow generated by the fan can be blown upwards, horizontally or downwards, and different requirements of users can be met. When the rotation axis is perpendicular to the horizontal plane, the fan assembly can rotate at a certain angle relative to the base assembly in the horizontal plane, so that the air supply area is enlarged, and the comfort level of a user is improved.

Drawings

FIG. 1 is a schematic overall structure of embodiment 1;

FIG. 2 is an exploded view of example 1;

fig. 3 is a schematic view of the structure of the connecting arm body, the wire decorative cover, the mounting post, the copper bush, the plug connector and the anti-drop table in embodiment 1;

FIG. 4 is a schematic view of another construction of the lock assembly of embodiment 1;

fig. 5 is an exploded view of the fan body in embodiment 1;

fig. 6 is an enlarged view corresponding to detail a in fig. 5;

fig. 7 is a schematic structural view of a motor rotor in embodiment 1;

FIG. 8 is a schematic view of the fan blade assembly in embodiment 1;

fig. 9 is a schematic structural view of a fan assembly in embodiment 2;

FIG. 10 is a schematic view of the structure of a fan assembly in embodiment 3;

fig. 11 is a schematic structural view of a front cover in embodiment 4;

FIG. 12 is an enlarged view of a portion of FIG. 11 at A;

fig. 13 is a schematic structural view of another front cover in embodiment 4;

fig. 14 is a partial enlarged view at B in fig. 13;

fig. 15 is a schematic view of the structure of the fan in embodiment 5 at a first view angle;

fig. 16 is a schematic structural diagram of the fan in embodiment 5 at a second viewing angle.

Reference numerals:

1. a fan body; 2. a base assembly; 3. installing a cradle head; 4. a telescopic rod; 5. a chassis; 6. a connecting arm; 7. a rear cover; 71. a clamping convex block; 8. a front cover; 81. a clamping groove; 9. a locking assembly; 10. a motor assembly; 11. a fan blade assembly; 12. a mounting table; 13. a first external thread; 14. a locking ring; 15. a first mounting groove; 16. a slot; 17. a connecting arm body; 18. a wire decorative cover; 19. a plug; 20. a wire slot; 21. an anti-drop table; 22. a fan blade; 23. a mounting assembly; 24. a mounting head; 25. a second mounting groove; 26. a mounting part; 27. a clamping table; 28. a plug-in column; 29. a damping ring; 30. a plug hole; 31. a mounting column; 32. a motor stator; 33. a motor rotor; 34. a rotating shaft; 35. a motor cover; 36. a magnetic ring; 37. a copper sleeve; 38. a clasp; 39. a threaded column; 40. a fixed cover; 41. a second internal thread; 42. a second external thread; 43: a through hole; 44: and (3) a threaded hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

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.

It should be noted that in the description of the present invention, the terms "first," "second," and the like are merely used for convenience in describing the various elements and are not to be construed as indicating or implying a sequential relationship, 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.

Example 1:

referring to fig. 1, the present embodiment provides a fan, which includes: the fan assembly and the base assembly 2, wherein the base assembly 2 includes a support rod, the fan assembly may also be referred to as a fan body 1, and the fan body 1 is mounted on the support rod of the base assembly 2. Thus, the base assembly 2 provides support for the fan assembly. In use, the base assembly 2 can be placed on the ground or on a table top or other platform.

Referring to fig. 2, the fan assembly specifically includes a fan head and a connection arm 6, one end of the connection arm 6 is connected with the fan head, and the other end of the connection arm 6 is connected with a support rod, so as to mount the fan head on the support rod of the base assembly 2.

It will be appreciated that as shown in fig. 5, the fan head includes a fan housing, a fan blade assembly 11 disposed in the fan housing, and a motor assembly 10, the motor assembly 10 driving the fan blade assembly 11 to rotate to form an air flow, the air flow being blown out of the fan housing to effect air supply.

Wherein, as shown in fig. 4, the fan housing includes a front housing 8 and a rear housing 7 arranged from front to rear, and the front housing 8 and the rear housing 7 are detachably assembled. Therefore, the front cover 8 and the rear cover 7 can be detached, the front cover 8 can be cleaned independently, and dust on the fan blade assembly 11 can be cleaned conveniently. Here, the front refers to a direction toward the air flow blowout, and the rear refers to a direction away from the air flow blowout.

The connecting arm 6 is detachably connected to the fan housing, in particular to the rear housing 7, so that the fan housing is detachably mounted on the support bar of the base assembly 2. Thus, the fan housing can be detached from the connecting arm 6, and the fan head can be cleaned.

The structure and function of the connecting arm 6 are described in detail below with reference to the drawings.

Referring to fig. 3, the connecting arm 6 provided in this embodiment includes a connecting arm body 17, and two ends of the connecting arm body 17 are respectively used for connecting with a support rod and a fan housing. The connecting arm body 17 is plate-shaped, and the plate-shaped connecting arm body 17 extends in the vertical direction, and the front side thereof is connected to the rear cover 7, and the front side or the rear side thereof is connected to the support rod.

Also, a wire groove 20 for accommodating a wire (described below) is formed on the connection arm body 17. Therefore, the wires can be intensively accommodated in the wire groove 20, so that the wire is prevented from being distributed in disorder, and further the subsequent management or maintenance is facilitated. Specifically, the wire groove 20 is defined by a coaming formed by extending the edge of the connecting arm body 17 toward the front side and the connecting arm body 17.

It should be understood in a broad sense that the wires may be cables connecting the motor assembly 10 to a battery of the fan, the battery providing electrical power to the motor assembly 10 through the wires, thereby enabling the motor assembly 10 to operate effectively. Here, the battery may be provided on the base assembly 2, in which case the support rod may be hollow, and the lead wires may extend upward from the support rod to connect with the motor assembly 10. Thereby, the weight of the base assembly 2 increases, and thus the base assembly 2 can stably support the fan head.

Further, with continued reference to fig. 3, the wire chase 20 is capped with a wire decorative cover 18. So set up, wire dress trim cover 18 seals wire casing 20 to with the wire locking in wire casing 20, and then be favorable to avoiding the wire to expose in external environment and receive the destruction, reduce the risk that the fan received the destruction, simultaneously, be favorable to avoiding exposing the wire to influence the whole visual effect of fan, the fan is more pleasing to the eye.

In the example shown in fig. 3, the wire dress cover 18 includes a cover plate covering the wire groove 20 and a side plate surrounding the edge of the cover plate, that is, the wire dress cover 18 has a box-like structure with one side open, and the space for accommodating the wires is larger for the wire dress cover 18 of the box-like structure than for the plate-like structure.

Alternatively, the wire dress cover 18 may be snap-fit with the connecting arm body 17. Specifically, as shown in fig. 3, the side plate is inserted into the wire groove 20 and the outer wall thereof is closely attached to the inner wall of the coaming of the connecting arm body 17.

Alternatively, the wire dress cover 18 may be screw-fitted to the rear cover 7, with the wire dress cover 18 covering only the wire slot 20 and not being connected to the connecting arm body 17. Specifically, as shown in fig. 4, the wire decorating cover 18 is provided with a threaded hole 44, the rear cover 7 is provided with a through hole 43, the center line of the through hole 43 is collinear with the center line of the threaded hole 44, and the fastening screw is matched with the threaded hole 44 after passing through the through hole 43, so that the wire decorating cover 18 is connected with the rear cover 7.

Of course, the wire decorative cover 18 can be connected by adopting the two connection modes, that is, the wire decorative cover 18 is clamped with the connecting arm body 17 and is also screwed with the rear cover 7, so that the connecting arm body 17 can be connected with the rear cover 7 through the wire decorative cover 18. It is known that the wire dress cover 18 is detachably connected to the connecting arm body 17, so that the wire dress cover 18 can be detached from the connecting arm body 17, and the wire chase 20 can be opened, thereby facilitating maintenance of the wire.

The connecting arm body 17 is further provided with a wire passing hole penetrating through the connecting arm body 17, and the wire passing hole is communicated with the wire slot 20 and used for a wire to pass through. Therefore, the lead wire for connecting the storage battery and the motor assembly 10 can be penetrated into the supporting rod by the base assembly 2, extend upwards along the supporting rod, penetrate into the wire slot 20 by the wire passing hole and then be connected with the motor assembly 10.

Referring to fig. 2 and 3, the connecting arm body 17 is provided with a hinge seat for being rotatably connected with the support rod. Thereby, the fan housing connected to the connection arm 6 can be rotated with respect to the support rod of the base assembly 2, and the fan assembly (i.e., the fan body 1) is rotatably mounted on the support rod. When the hinge axis of the hinge seat is parallel to the horizontal plane, the fan assembly can be turned for a certain angle relative to the base assembly 2, and through adjusting the angle of the fan assembly, air flow generated by the fan can be blown upwards, horizontally or downwards, so that different requirements of users can be met. When the hinge axis of the hinge seat is perpendicular to the horizontal plane, the fan assembly can rotate at a certain angle relative to the base assembly 2 in the horizontal plane, so that the air supply area is enlarged, and the comfort level of a user is improved.

Specifically, the hinge seat is provided at the bottom end of the connection arm body 17. Thereby, it is advantageous to reduce the risk of interference with the support bar when the fan assembly rotates about the hinge axis when the hinge axis is parallel to the horizontal plane, as compared to when the hinge seat is provided at the top end of the connection arm body 17. The hinge seat can extend forward, the hinge seat is arranged below the fan head, the support rod is positioned at the front side of the connecting arm 6 to be connected with the hinge seat, and in particular, the support rod is connected with the front side of the platy connecting arm body 17; the hinge seat can also extend backward, and the bracing piece of this moment is located the rear side of linking arm 6 in order to be connected with the hinge seat, compares with the previous example, and the user that is located the fan place ahead can't observe the hinge seat, and the aesthetic property is good.

Taking the example of the hinge seat extending backward as an example, the hinge seat may include a hinge housing extending backward from the connection arm body 17, the hinge housing being formed with a hinge shaft for rotational connection with the support rod, and the fan assembly rotates around the hinge shaft. It should be noted that, the hinge shaft is provided with a line passing channel along the axis direction thereof, and the line passing hole is provided at a position of the connecting arm body 17 corresponding to the hinge housing. From this, wire casing 20, wire hole, wire passageway and the inside of bracing piece communicate in proper order, form the wire passageway that supplies the wire to wear to establish, and then make the wire hide in the wire passageway, and the whole of fan is pleasing to the eye.

In the example shown in fig. 2 and 3, the hinge housing includes a first hinge housing and a second hinge housing disposed in parallel, the first hinge housing and the second hinge housing being formed with opposite first hinge shafts and second hinge shafts. Thus, the connection relationship of the hinge housing and the support rod is more stable than when only one hinge shaft is provided. In this instance, there is an installation space between the first hinge housing and the second hinge housing, and the support bar is located in the installation space, and both sides thereof are hinged to the first hinge shaft and the second hinge shaft, respectively.

In fig. 2 to 4, the specific connection relationship between the connection arm 6 and the rear cover 7 is described in detail.

First, a specific structure in which the connection arm 6 and the rear cover 7 are connected by a snap-fit connection will be described. As shown in fig. 2 and 3, the connecting arm body 17 is provided with a plug 19 extending forward, and the plug 19 is used for plugging with a slot 16 provided in the rear cover 7. Thus, the connection mode is simple. The plug 19 may be disposed at the bottom end and/or the top end of the connecting arm body 17, and correspondingly, the lower portion and/or the upper portion of the rear cover 7 is provided with a slot 16, the plug 19 disposed at the bottom end of the connecting arm body 17 is plugged with the slot 16 of the lower portion of the rear cover 7, and the plug 19 disposed at the top end of the connecting arm body 17 is plugged with the slot 16 of the upper portion of the rear cover 7. When the bottom end and the top end of the connection arm body 17 are provided with the plug 19, the connection arm 6 composed of the connection arm body 17 and the plug 19 may surround at least a part of the rear cover 7.

In a further implementation manner of this embodiment, the plug connector 19 is further provided with an anti-falling table 21, and the anti-falling table 21 is used for being connected with an inner side wall of the slot 16. Thereby, it is advantageous to prevent the plug 19 from coming out of the slot 16, and it is further advantageous to avoid the connection arm 6 from being separated from the rear cover 7, so that the connection arm 6 is stably connected to the rear cover 7. In addition, the front side wall of the anti-falling table 21 is formed into an inclined surface, so that the anti-falling table 21 is conveniently clamped into the slot 16 when the connecting arm 6 and the rear cover 7 are assembled, and the installation is convenient.

Next, a specific structure in which the connection arm 6 is connected to the rear cover 7 via another intermediate member will be described. As shown in fig. 3, the connection arm body 17 is provided with a mount 12 for connection with the fan housing, that is, the fan housing is mounted on the mount 12. Thereby, the connection arm 6 is connected to the fan housing.

When the connection arm body 17 is connected with only a portion of the lower portion of the rear cover 7, the mount 12 may be provided at the tip of the connection arm body 17; when the connection arm body 17 is connected with only a portion of the upper portion of the rear cover 7, the mount 12 may be provided at the bottom end of the connection arm body 17; when the connection arm 6 composed of the connection arm body 17 and the plug 19 surrounds at least a part of the rear cover 7, the connection arm body 17 at this time spans the upper and lower parts of the rear cover 7, and the mount 12 may be provided in the middle of the connection arm body 17. By the above arrangement, the mount 12 is connected with the middle portion of the rear cover 7 as much as possible, so that the connection area is increased as much as possible, and the connection relationship is reliable.

The mounting table 12 and the rear cover 7 may be connected by socket connection or snap connection, similarly to the connection of the plug 19 and the rear cover 7. In an alternative example, a clamping groove is formed in the front end face of the mounting table 12, and a clamping block which is clamped with the clamping groove is formed in the back face of the rear cover 7. In another alternative example, as shown in fig. 2 and 3, the mounting table 12 is formed in a circular shape and includes a sidewall protruding forward, the rear cover 7 is formed with a circular mounting hole, and at least a portion of the sidewall extends into the circular mounting hole and is engaged with or clamped with the rear cover, that is, the rear cover 7 is engaged with the sidewall of the mounting table 12. Of course, it is understood that the mounting base 12 may be replaced by a regular shape such as square, triangle, rectangle, etc., and correspondingly, the mounting hole formed on the rear cover 7 may be square, triangle, rectangle, etc.

In order to further assist in securing the rear cover 7, a locking assembly 9 is also provided within the fan cover, the locking assembly 9 being adapted to lock the rear cover 7 so as to prevent the rear cover 7 from moving forward along its axis, thereby enabling the rear cover 7 to be stably mounted on the mounting table 12.

In one example, as shown in fig. 9, the locking assembly 9 includes a locking ring 14 disposed within the fan housing, the locking ring 14 being removably coupled to the mounting block 12, the locking ring 14 having an outer diameter greater than an inner diameter of the circular mounting hole. Thereby, the lock ring 14 can block the rear cover 7 from being detached from the mount 12 from the front, and at the same time, the connection arm body 17 located behind the rear cover 7 can block the rear cover from being detached from the mount 12 from the rear, so that the rear cover 7 can be stably connected with the connection arm 6. When the rear cover 7 needs to be cleaned, the locking ring 14 is detached from the mounting table 12, and the connecting arm 6 is pushed to the side far away from the front cover 8, so that the mounting table 12 is separated from the rear cover 7, and the anti-falling table 21 is separated from the inner wall of the slot 16, so that the fan cover and the connecting arm 6 can be separated.

For example, the side wall of the mounting table 12 may be formed with a first external thread 13, and the inner wall of the locking ring 14 is formed with a first internal thread matching with the first external thread 13, so that the mounting table 12 is screwed with the locking ring 14, and the locking ring 14 may be screwed when the mounting table is assembled or disassembled. For convenient screwing during assembly and disassembly, the outer surface of the locking ring 14 is also provided with an anti-slip part, which is beneficial to avoiding slipping during screwing. The anti-slip portion may be a mesh pattern, or, as shown in fig. 9, a tooth-like structure or a stripe-like structure provided on the outer surface of the lock ring 14.

In another example, the locking assembly 9 includes a clamping ring disposed in the fan housing, a clamping portion is disposed on the mounting table 12, the clamping ring is in clamping fit with the clamping portion, and an outer diameter of the clamping ring is larger than an inner diameter of the circular mounting hole. This allows the engagement ring to prevent the rear cover 7 from being separated from the mount 12 from the front. Specifically, the fastening part may be an elastic protrusion disposed on a side wall of the mounting table 12, and correspondingly, a recess matched with the elastic protrusion is disposed on an inner wall of the fastening ring; or, the buckle part is a dent arranged on the side wall of the mounting table 12, and correspondingly, the inner wall of the clamping ring is provided with an elastic bulge matched with the dent.

In order to further improve the stability of the rear cover 7, the number of the locking assemblies 9 may be plural, that is, the number of the locking rings 14 or the clamping rings may be plural, and the plurality of the locking rings 14 or the plurality of the clamping rings are sequentially connected with the mounting table 12 from front to back. Of course, in some examples, the locking ring 14 and the snap ring may be used in combination, where at least one locking ring 14 is threaded with the mounting table 12 and at least one snap ring is snapped with the mounting table 12.

The structure and function of the fan head will be described in detail with reference to the accompanying drawings.

As described above, referring to fig. 5, the fan head includes a fan housing, and a fan blade assembly 11 and a motor assembly 10 disposed in the fan housing, and the motor assembly 10 provides power to the fan blade assembly 11 to drive the fan blade assembly 11 to rotate. The motor assembly 10 includes a detachable motor stator 32 and a motor rotor 33, the motor stator 32 is detachably fixed on the mounting table 12, the motor rotor 33 can rotate relative to the motor stator 32, and a motor shaft is arranged on the motor rotor 33 and is in transmission connection with the fan blade assembly 11 to drive the fan blade assembly 11 to rotate. Alternatively, the motor assembly 10 may be an inner rotor motor, i.e. the motor stator 32 is sleeved outside the motor rotor 33, or, as shown in fig. 5, the motor assembly 10 is an outer rotor motor, i.e. the motor rotor 33 is sleeved outside the motor stator 32.

The following description will take the motor assembly 10 as an example of an external rotor motor. It will be appreciated that the motor rotor 33 includes a motor housing 35 and a magnetic ring 36, the motor housing 35 having a cavity therein, the motor stator 32 and the magnetic ring 36 being both received within the cavity, and the magnetic ring 36 being located between the motor housing 35 and the motor stator 32. When the motor assembly 10 is powered on, the magnetic ring 36 generates a magnetic field interaction, so that the motor rotor 33 rotates relative to the motor stator 32, and the fan blade assembly 11 is driven to rotate.

As shown in fig. 3 and 5, the mount table 12 fixed with respect to the fan housing is provided with a mounting post 31 protruding forward, the mounting post 31 being used for mounting the motor assembly 10. When the motor assembly 10 is an inner rotor motor, the motor stator 32 is detachably fixed to the mounting post 31, that is, the mounting post 31 is used for fixing the motor stator 32; when the motor assembly 10 is an external rotor motor, the motor stator 32 or the motor cover 35 is detachably fixed to the mounting post 31, that is, the mounting post 31 serves to fix the motor stator 32 or the motor cover 35. Thus, the mounting table 12 provided on the connection arm body 17 constitutes a part of the fan head together with the fan housing, and the motor assembly 10 is detachably assembled on the mounting post 31 of the mounting table 12, thereby realizing the disassembly and assembly of the motor assembly 10. When the fan head is detached, the motor assembly 10 can be directly detached from the mounting table 12, so that the whole fan head can be detached from the base assembly 2, and the whole fan head can be cleaned conveniently.

Wherein, the motor stator 31 is sleeved on the mounting column 31. Illustratively, a mounting groove is provided at an end of the motor stator 31 facing the mounting table 12, and the mounting post 31 is inserted into the mounting groove. Preferably, the motor stator 32 is annular, and the annular motor stator 32 is sleeved on the mounting post 31. Thus, the annular motor stator 32 provides an opportunity for the connection of the motor rotor 33 to the mounting post 31, thereby improving the reliability of the connection of the motor assembly 10 to the mounting table 12.

Referring to fig. 7, a rotary shaft 34 is provided on a motor rotor 33, and a mounting hole for rotatably fitting with the rotary shaft 34 is provided in an axial direction of the mounting column 31. In other words, the rotation shaft 34 passes through the ring-shaped motor stator 32 and is inserted into the mounting hole to be rotatably coupled with the mounting post 31. Thus, the motor rotor 33 is connected to the mounting post 31 and is rotatable relative to the mounting post 31, thereby improving the reliability of the connection of the motor assembly 10 to the mounting table 12. Specifically, the rotating shaft 34 is fastened in the cavity of the motor cover 35, and extends toward the mounting post 31 along the axial direction of the magnetic ring 36, so as to be effectively inserted into the mounting hole.

The connection manner of the rotating shaft 34 and the motor cover 35 is not limited in this embodiment, and for example, the rotating shaft 34 and the motor cover 35 are formed into an integral structure by an integral processing process such as casting, forging, or injection molding. Thus, the process of assembling the motor cover 35 and the rotating shaft 34 is omitted, and the assembly efficiency is improved. Further, the strength of the motor rotor 33 can be improved without increasing the cost. It is to be readily understood that the shaft 34 and the motor housing 35 may be connected by welding, bonding or clamping, in addition to being integrally formed.

As shown in fig. 3 and 7, a collar is further installed in the installation hole, and the collar is sleeved on the rotating shaft 34, and the rotating shaft 34 can rotate relative to the collar. Thus, the ring sleeve supports the rotating shaft 34 to rotate, so that friction generated between the rotating shaft 34 and the wall of the mounting hole during rotation is reduced. Further, a first end (i.e., a front end in fig. 7) of the shaft 34 is provided with a snap ring 38, and a collar is positioned between the snap ring 38 and a second end (i.e., a rear end in fig. 7) of the shaft 34, the snap ring 38 having an outer diameter greater than an inner diameter of the collar. Thus, the snap ring 38 can prevent the rotating shaft 34 from being separated from the ring sleeve, so that the ring sleeve can be always sleeved on the rotating shaft 34 to play a role of supporting rotation. Specifically, the material of the ring is not limited to metal, for example, the ring is a copper sleeve 37 or an aluminum alloy ring, and the material of the ring may be ceramic or plastic.

Preferably, the mounting post 31 is centrally disposed on the mounting table 12. So arranged, the motor assembly 10 removably coupled to the mounting post 31 is fixed relative to the center of the mounting table 12 to prevent the motor assembly 10 from being disposed off-center of the mounting table 12.

Alternatively, the center of the mounting table 12 may be at the same height as the center of the fan housing. Thus, the center of the mount 12 and the center of the motor assembly 10 connected to the mount 12 are flush with the center of the fan housing, and the motor assembly 10 disposed in the fan housing is not deviated from the center of the fan housing in the up-down direction.

Optionally, the center of the mounting table 12 is located on an extension of the axis of the motor shaft that drives the rotation of the fan blade assembly 11. That is, the motor shaft of the motor assembly 10 is located at the center of the mounting table 12, and the center of the fan blade assembly 11 in driving connection with the motor shaft is also located at the center of the mounting table 12, so that the projections of the center of the mounting table 12, the motor assembly 10 and the fan blade assembly 11 and the center of the fan housing on the vertical plane are all coincident, that is, the centers of the components are coincident without deviating from the center, and the aesthetic property of the fan is further improved.

The structure and function of the fan blade assembly 11 will be described in detail with reference to the accompanying drawings.

The fan blade assembly 11 is arranged in the fan housing and is in transmission connection with the motor rotor 33, and the motor rotor 33 drives the fan blade assembly 11 to rotate, so that air forms an air flow, and the air flow is driven to blow out from the fan housing, so that the temperature of surrounding air is reduced. Specifically, as shown in fig. 5, the fan blade assembly 11 includes a plurality of fan blades 22 and a mounting head 24 disposed in the middle of the fan blades 22, where the plurality of fan blades 22 are radially disposed in the circumferential direction of the mounting head 24, and the mounting head 24 is detachably connected to the motor rotor 33, so that the fan blade assembly 11 is detachably fixed on the motor rotor 33. Because front shroud 8 and back shroud 7 detachable link together, front shroud 8 is by the back of separating, and flabellum subassembly 11 can be dismantled from motor assembly 10 and can follow the fan housing and take out, and then the dust on the clearance flabellum 22 of being convenient for is favorable to avoiding the dust on the flabellum 22 to be blown out by the air current and leads to external environment to receive the influence.

It is to be readily understood that the mounting head 24 may be detachably connected to the motor rotor 33 through an intermediate member provided at the front end surface of the motor rotor 33. Preferably, referring to fig. 5 and 8, the mounting head 24 is sleeved on the outer side of the motor rotor 33 to be detachably connected with the motor rotor 33. Specifically, the mounting head 24 is provided with a second mounting groove 25 on a side facing the rear cover 7, and the motor cover 35 is accommodated in the second mounting groove 25. Thus, the entire motor rotor 33 provides support for the fan blade assembly 11 with a reliable connection, as compared to the mounting head 24 mounted on the front end surface of the motor rotor 33. Also, since the motor cover 35 is accommodated in the second mounting groove 25, it is advantageous to avoid the motor assembly 10 from occupying an excessive accommodation space in the fan cover (refer to the following description).

Preferably, the motor rotor 33 is threadedly engaged with the fan blade assembly 11 via the mounting assembly 23. Therefore, the connection relation is reliable, and the connection mode is simple. Of course, besides the screw connection, the motor rotor 33 and the fan blade assembly 11 may be connected by a clamping connection, and other connection manners of the motor rotor 33 and the fan blade assembly 11 are not described herein.

The present embodiment describes an example of a screw-fit of the blade assembly 11 with the motor rotor 33, in which the mounting assembly 23 includes the click-on table 27 provided at the motor rotor 33 and the mounting portion 26 provided at the blade assembly 11, wherein the click-on table 27 is an arc-shaped rack provided on the motor rotor 33 to screw-fit with the blade assembly 11, and the tooth width of the arc-shaped rack extends along the rotation axis direction of the motor rotor 33; correspondingly, the mounting portion 26 is a tooth-shaped portion disposed on the groove wall of the second mounting groove 25 of the mounting head 24 to be in threaded engagement with the motor rotor 33, and the tooth width of the tooth-shaped portion also extends along the rotation axis direction of the motor rotor 33, and the tooth-shaped portion is engaged with the arc-shaped rack to realize the threaded engagement of the fan blade assembly 11 and the motor rotor 33. Here, the groove wall of the second mounting groove 25 can be understood as a side wall, as well as a groove bottom.

For example, an arc-shaped rack may be provided on the outer side surface of the motor housing 35 of the motor rotor 33, with tooth-shaped portions provided on the side walls of the second mounting groove 25 to be screw-engaged with the arc-shaped rack.

For another example, referring to fig. 5, 6 and 8, an arc-shaped rack may be provided on the front surface of the motor cover 35 of the motor rotor 33, and a tooth-shaped portion at this time is provided on the bottom of the second mounting groove 25 to be screw-engaged with the arc-shaped rack.

It should be noted that the tooth-shaped portion may be formed by teeth of an internal gear provided on the groove wall of the second mounting groove 25 in a protruding manner, the internal gear being engaged with the arc-shaped rack, or by teeth of a gear groove provided on the groove wall of the second mounting groove 25 in a recessed manner, the gear groove being engaged with the arc-shaped rack.

By providing the arc-shaped rack and the tooth-shaped portion matched with the arc-shaped rack, the threaded matching of the motor assembly 10 and the fan blade assembly 11 is realized, so that the fan blade assembly 11 can synchronously rotate along with the rotation of the motor rotor 33.

Further, the arc-shaped racks may be plural. By providing a plurality of arc racks, the reliability of the connection between the motor rotor 33 and the motor assembly 10 is enhanced. In the example shown in fig. 6, the motor rotor 33 is provided with two arc racks symmetrical about the rotation axis on both sides of the rotation axis.

It should be noted that the threaded engagement of the motor rotor 33 and the fan blade assembly 11 is configured such that when the motor rotor 33 rotates the fan blade assembly 11, the motor rotor 33 rotates in a screwing direction with the fan blade assembly 11. Thus, when the motor rotor 33 is operated, the fan blade assembly 11 can rotate along with the motor rotor, and the motor rotor and the fan blade assembly are gradually screwed, so that the fan blade assembly 11 is prevented from rotating in a unscrewing direction to cause the fan blade assembly 11 to be loosened.

On the basis of the above embodiment, with continued reference to fig. 6 and 8, the motor rotor 33 is provided with the plugging post 28, and the bottom of the second mounting groove 25 is provided with a plugging seat plugged with the plugging post 28, so that the motor rotor 33 and the fan blade assembly 11 are further connected in a plugging manner on the basis of threaded fit, so that the fan blade assembly 11 can be fixedly mounted on the motor assembly 10. It should be noted that in the plugging process, the arc-shaped rack and the tooth-shaped part can be plugged and matched together at any angle, so that the problem of inconvenient assembly and disassembly caused by the fact that the installation angle or the installation position is found during the assembly of the fan blade 22 is avoided, and the convenience of assembly between the fan blade 22 and the motor component is improved.

Specifically, the plug-in post 28 is disposed on the front surface of the motor rotor 33 and extends forward of the motor rotor 33, and the plug-in socket is provided with a plug-in hole 30, and the plug-in hole 30 is aligned with the plug-in post 28, so that the plug-in post 28 is plugged in the plug-in hole 30.

In the preferred embodiment, the plug-in post 28 is provided at the center of the front surface of the motor rotor 33, and the plug-in socket is provided at the center of the groove bottom of the second mounting groove 25. So set up, the flabellum subassembly 11 can not deviate from the center setting of motor rotor 33 for the aesthetic property is better, in favor of avoiding the vibrations that the decentration leads to when operating. Further, an annular groove is arranged on the plug-in column 28, a damping ring 29 is sleeved on the plug-in column 28, and the damping ring 29 is positioned in the annular groove. Therefore, the damping ring 29 abuts against the inner wall of the insertion hole 30 to prevent the insertion post 28 from being separated from the insertion hole 30, thereby being beneficial to preventing the motor rotor 33 from being separated from the fan blade assembly 11.

In addition, the arcuate rack, the peg-in post 28, and the motor housing 35 may be formed as a unitary structure by an integral process such as casting, forging, or molding. Therefore, the procedure of assembling the motor cover 35, the arc-shaped rack and the plug-in column 28 is omitted, and the assembly efficiency is improved. Further, the strength of the motor rotor 33 can be improved without increasing the cost. Of course, the arcuate rack and post 28 may be attached to the motor housing 35 by welding or adhesive or the like.

Referring to fig. 5, an exemplary disassembly procedure of the fan provided in this embodiment is:

The front cover 8 and the rear cover 7 are separated first, so that the front cover 8 is detached from the rear cover 7;

moving the fan blade assembly 11 to the side far away from the rear cover 7, so that the plug seat is separated from the plug post 28, and the damping ring 29 is also separated from the plug hole 30, thereby detaching the fan blade assembly 11 from the motor assembly 10;

screwing the locking ring 14 again so that the first internal thread of the locking ring 14 is disengaged from the first external thread 13 of the side wall of the mounting table 12, the locking ring 14 being disengaged from the mounting table 12;

pushing the connecting arm 6 to the rear side, i.e. the side far from the front cover 8, the motor stator 32 of the motor assembly 10 is disengaged from the mounting post 31, so that the motor assembly 10 is detached from the mounting table 12 and the motor assembly 10 is moved forward, at the same time, the anti-disengaging table 21 is disengaged from the inner wall of the slot 16, the plug 19 is disengaged from the slot 16, and then the rear cover 7, the motor assembly 10 and the connecting arm 6 are successfully separated, thereby completing the detachment of the fan head.

Based on the above, the front cover 8, the rear cover 7, the fan blade assembly 11 and the motor assembly 10 can be detached individually, so that these components can be cleaned individually, and the cleaning is convenient.

Example 2:

in connection with fig. 9, unlike embodiment 1, embodiment 2 describes another example of screw engagement of the fan blade assembly 11 with the motor assembly 10. In this example, the mounting assembly 23 includes a clamping table 27 provided on the motor rotor 33 and a mounting portion 26 provided on the fan blade assembly 11, wherein the clamping table 27 is an arc-shaped rack provided on the motor rotor 33 to be screw-fitted with the fan blade assembly 11, and a tooth width of the arc-shaped rack extends along a rotation axis direction of the motor rotor 33; correspondingly, the bottom of the mounting head 24 is provided with a mounting notch, the mounting notch is a through hole, the mounting part 26 is a tooth-shaped part arranged on the side wall of the mounting notch to be in threaded fit with the motor rotor 33, the tooth width of the tooth-shaped part also extends along the rotation axis direction of the motor rotor 33, that is, the mounting notch is tooth-shaped, and the mounting notch of the tooth shape is matched with the arc-shaped rack to realize the threaded fit of the fan blade assembly 11 and the motor rotor 33.

Specifically, the mounting head 24 of the fan blade assembly 11 further comprises a mounting head body and a fixing cover 40, the mounting notch is formed in the front end of the mounting head body, the fixing cover 40 is arranged at the mounting notch in a covering mode and encloses a second mounting groove with the mounting head body, and the side wall of the mounting notch is provided with a tooth shape matched with the arc-shaped rack in a threaded mode.

In addition, the number of arc racks, the mounting manner of the motor cover 35, the direction of fitting with the tooth-shaped portion, and the like are similar to those of embodiment 1, and will not be described in detail here.

With continued reference to fig. 9, the motor rotor 33 is provided with a screw post 39, and the fixing cover 40 is screwed with the screw post 39. Thereby, the motor rotor 33 and the fan blade assembly 11 are connected through the cooperation of the screw post 39 and the fixed cover 40 on the basis of the screw cooperation, so that the fan blade assembly 11 can be fixedly mounted on the motor assembly 10. Specifically, the threaded post 39 is disposed on the front surface of the motor rotor 33, the fixing cover 40 is disposed outside the mounting head 24, a third mounting groove is disposed on a side of the fixing cover 40 facing the motor assembly 10, a third external thread is disposed on the outer surface of the threaded post 39, and a third internal thread matched with the third external thread is disposed on a side wall of the third mounting groove.

Preferably, the threaded engagement of the third external thread and the third internal thread is configured such that when the motor rotor 33 rotates the fan blade assembly 11, the motor rotor 33 rotates in a screwing direction with the fan blade assembly 11. Therefore, the motor rotor 33 rotates to drive the fan blade assembly 11 to rotate and simultaneously drive the fan blade assembly 11 to screw, so that the motor rotor 33 and the fan blade assembly 11 are gradually screwed, and the fan blade assembly 11 is prevented from rotating in the unscrewing direction to loosen the motor rotor and the fan blade assembly 11.

The fixed cover 40 may also be coupled to the mounting head 24 to further enhance the mounting stability of the fixed cover 40. Illustratively, the retaining cap 40 may be welded, snapped or screwed onto the mounting head 24 to seal the mounting gap.

A preferred example of the present embodiment is that the screw post 39 is provided at a central position of the front surface of the motor rotor 33, and correspondingly, the third mounting groove is provided at a central position of the groove bottom of the second mounting groove 25. So set up, the flabellum subassembly 11 can not deviate from the center setting of motor rotor 33 for the aesthetic property is better, in favor of avoiding the vibrations that the decentration leads to when operating. Of course, as an alternative implementation, the threaded post 39 may be replaced by a clamping post, and the clamping post is in clamping connection with the fixing cover 40, so as to realize the fixed assembly of the fan blade assembly 11.

Referring to fig. 9, another exemplary disassembly procedure of the fan provided in the present embodiment is:

screwing the fan blade assembly 11 in a unscrewing direction, so that the fixed cover 40 of the fan blade assembly 11 is separated from the threaded column 39 of the motor rotor 33, and the fan blade assembly 11 is detached from the motor assembly;

screwing the locking ring 14 again so that the first internal thread of the locking ring 14 is disengaged from the first external thread of the side wall of the mounting table 12, the locking ring 14 is disengaged from the mounting table 12;

Example 3:

referring to fig. 10, unlike embodiment 1 and embodiment 2, embodiment 3 describes an example of still another screw-fit of the fan blade assembly 11 with the motor assembly 10. In this example, the fan blade assembly 11 includes a mounting head 24 and a plurality of fan blades 22 disposed in a circumferential direction of the fan blades 22, the mounting head 24 is provided with a second mounting groove 25 toward one side of the rear cover 7, the mounting assembly 23 includes a second internal thread 41 disposed on an inner wall of the second mounting groove 25 and a second external thread 42 disposed on an outer wall of the motor cover 35, and the second internal thread 41 is engaged with the second external thread 42 to screw-engage the fan blade assembly 11 with the motor rotor 33.

Preferably, the threaded engagement of the second external thread 42 with the second internal thread 41 is configured such that when the motor rotor 33 rotates the fan blade assembly 11, the motor rotor 33 rotates in a screwing direction with the fan blade assembly 11. Therefore, the motor rotor 33 rotates to drive the fan blade assembly 11 to rotate and simultaneously drive the fan blade assembly 11 to screw, so that the motor rotor 33 and the fan blade assembly 11 are gradually screwed, and the fan blade assembly 11 is prevented from rotating in the unscrewing direction to loosen the motor rotor and the fan blade assembly 11.

Referring to fig. 10, still another exemplary disassembly procedure of the fan provided in the present embodiment is:

screwing the fan blade assembly 11 in a unscrewing direction so that the second internal threads 41 of the fan blade assembly 11 are separated from the second external threads 42 of the motor rotor 33, thereby detaching the fan blade assembly 11 from the motor assembly 10;

Example 4:

with continued reference to fig. 4, 5, 9 and 10, in accordance with any of the foregoing embodiments, the fan housing includes a front housing 8 and a rear housing 7, and the front housing 8 and the rear housing 7 are connected to define a housing space together, where the motor assembly 10 and the fan blade assembly 11 are mounted, so as to prevent the fan blade assembly 11 from being exposed to the outside and injuring the user by touching the fan blade 22 by mistake.

The shapes of the front cover 8 and the rear cover 7 are not limited to the cylindrical shape, and the cross sections of the front cover 8 and the rear cover 7 in the axial direction thereof may be other regular or irregular shapes such as rectangular, square, elliptical, diamond, etc., which is not limited in this embodiment. Preferably, as shown in fig. 5, the front cover 8 and the rear cover 7 are cylindrical, have good aesthetic property, conform to aesthetic habits of people, and are also beneficial to storage and transportation.

For example, when the cylindrical body formed by buckling the front cover 8 and the rear cover 7 has substantially the same diameter as the chassis 5 in the cylindrical shape, convenience in storage and transportation can be further improved. Of course, the fan housing may be stacked on the chassis 5 during the specific implementation. Therefore, on the basis that the diameters of the fan cover and the chassis are the same, the fan bodies 1 stacked together can occupy less space, and are convenient to transport. Specifically, the rear surface of the rear cover 7 and the top surface of the chassis 5 may be provided with mutually-matched stepped surfaces, so that when the fan main body 1 is accommodated and stacked on the chassis 5, the fitting degree of the two is improved, and the feeling of unevenness is avoided from being visually generated.

With continued reference to fig. 4, 5, 9 and 10, the rear end of the front cover 8 and the front end of the rear cover 7 have the same shape so that the front cover 8 and the rear cover 7 can be connected to each other. It will be appreciated that the interconnection of the front cover 8 and the rear cover 7 should be understood in a broad sense, i.e. as follows:

one situation is that the front cover 8 is butted with the rear cover 7, the rear end face of the front cover 8 abuts against the front end face of the rear cover 7, and the whole front cover 8 is completely located outside the rear cover 7, and the whole rear cover 7 is also completely located outside the front cover 8. In this example, the rear end face of the front cover 8 may be planar, and correspondingly, the front end face of the rear cover 7 is also planar; alternatively, the rear end surface of the front cover 8 may be a curved surface (e.g., a stepped surface), and the front end surface of the rear cover 7 may be a curved surface (e.g., a stepped surface) that mates with the rear end surface of the front cover 8.

When the rear end surface of the front cover 8 and the front end surface of the rear cover 7 are curved surfaces, the junction of the front cover 8 and the rear cover 7 smoothly transitions. Thereby, the front cover 8 and the rear cover 7 are easily processed, and the joint can be tightly connected together to ensure the reliability of the connection of the front cover 8 and the rear cover 7.

In another case, referring to fig. 1, 9 and 10, the rear end face of the front cover 8 is received in the front end opening of the rear cover 7, and the outer surface of the side wall of the front cover 8 at this time is in contact with the inner surface of the side wall of the rear cover 7. Compared with the former case, at least part of the front cover 8 of the present embodiment is hidden in the rear cover 7, and the junction between the front cover 8 and the rear cover 7 is also hidden in the rear cover 7, so that the appearance is better.

In still another case, the front end face of the rear cover 7 is accommodated in the rear end opening of the front cover 8, and the inner surface of the side wall of the front cover 8 at this time is in contact with the outer surface of the side wall of the rear cover 7. Compared with the first case, at least part of the rear cover 7 of the present embodiment is hidden in the front cover 8, and the junction between the front cover 8 and the rear cover 7 is also hidden in the front cover 8, which is attractive.

On the basis of the above embodiment, the front cover 8 and the rear cover 7 are detachably assembled for easy disassembly. Therefore, the front cover 8 and the rear cover 7 can be separated, and the front cover 8 can be detached from the rear cover 7, so that dust on the front cover 8 can be cleaned conveniently, and the influence on the external environment caused by the blowing of the dust on the front cover 8 by airflow can be avoided. In combination with the foregoing, the rear cover 7 can be separated from the motor assembly 10 and the connecting arm 6, that is, the rear cover 7 can be detached independently, so as to clean dust on the rear cover 7, and the cleaning is convenient.

The front cover 8 and the rear cover 7 can be detachably connected in a threaded connection mode or in a clamping connection mode. The preferred mode of this embodiment is that front shroud 8 and back shroud 7 joint cooperation, and like this, front shroud 8 and back shroud 7 need not to connect through parts such as bolt, screw, are favorable to avoiding parts such as bolt or screw to expose and influence the holistic visual effect of fan.

Schematically, referring to fig. 5, 9 and 10, when the front cover 8 and the rear cover 7 are coupled by means of another case in which the rear end surface of the front cover 8 is received in the front end opening of the rear cover 7, the outer surface of the side wall of the front cover 8 may be provided with a catching groove 81, and the inner surface of the side wall of the rear cover 7 may be provided with a catching protrusion 71 engaged with the catching groove 81.

Alternatively, the clamping groove 81 may include a communicating through groove and a clamping groove, where a side of the through groove near the rear end surface of the front cover 8 has a communicating notch, and the notch and the through groove are configured to be capable of accommodating the clamping projection 71, so that the clamping projection 71 can be accommodated in the through groove through the notch; the locking groove extends along the circumferential direction of the front cover 8 and is in locking fit with the locking projection 71. In other words, the engaging groove 81 is substantially in an "L" shape, and a groove side on a short side of the "L" shape engaging groove 81 is located at an edge of the rear end face of the front cover 8.

As shown in fig. 11 and 12, the through groove may be disposed obliquely to the locking groove, and the locking groove still extends in the circumferential direction of the front cover 8, that is, the central axis of the through groove is not perpendicular to the central axis of the locking groove, so that the locking projection 71 easily slides into the locking groove along the oblique groove wall of the through groove. Further, as shown in fig. 13 and 14, the boundary position between the through groove and the locking groove may be further configured as an arc segment, so that the smoothness of the locking projection 71 sliding into the locking groove from the through groove is further improved.

It will be appreciated that when the front cover 8 and the rear cover 7 are connected by means of mounting in a further case, that is, when the front end surface of the rear cover 7 is received in the rear end opening of the front cover 8, the outer surface of the side wall of the rear cover 7 is provided with a clamping groove, and the outer surface of the side wall of the front cover 8 is provided with a clamping projection matched with the clamping groove.

Referring to fig. 5, an exemplary installation process of the fan cover provided in the present embodiment is:

firstly, aligning the notch of the clamping groove 81 of the front cover 8 with the clamping convex block 71, namely aligning the groove edge on the short side of the L-shaped clamping groove 81 with the clamping convex block 71;

the front cover 8 is moved backwards, so that the clamping convex blocks 71 pass through the gaps and are accommodated in the through grooves;

the front cover 8 is rotated again, so that the clamping projection 71 slides into the clamping groove from the through groove and is clamped with the clamping groove, and the front cover 8 and the rear cover 7 are assembled.

It will be appreciated that the disassembly process and the assembly process of the fan housing are reversed, and will not be described in detail herein.

Example 5:

on the basis of any of the foregoing embodiments, in order to realize air supply, the front cover 8 and the rear cover 7 forming the fan cover are provided with grids, and the fan blade assembly 11 positioned in the fan cover rotates to form air flow, and the air flow is blown onto the user through the grids, so that the user feels cool.

The front cover 8 is provided with an air outlet grid, and air flows out of the air outlet grid under the driving action of the fan blades 22. Wherein, the central point of front shroud 8 puts and is equipped with the fixed plate, and the air-out grid is connected in the fixed plate and is radial arrangement, that is to say, the one end of air-out grid is connected with the fixed plate, and the other end is connected with the outward flange of front shroud 8. Illustratively, referring to fig. 1 and 4, the air outlet grille may be in a straight radial shape; alternatively, referring to fig. 15, the air outlet grid may be radial in arc; of course, the air outlet grid can also be in a curve radial shape.

The structure of the rear cover 7 is described in detail below with reference to the drawings.

With continued reference to fig. 2, the back surface of the rear cover 7 includes a grill portion for the circulation of air. Thereby, air in the external environment forms an air flow under the driving action of the fan blades 22, and the air flow can enter the fan housing from the grid part of the rear housing 7 to be blown out by the fan blades 22.

Alternatively, as shown in fig. 2, the grid portions may be arranged radially, specifically, one end of the grid portion is connected to the hole wall of the circular mounting hole of the rear cover 7, and the other end is connected to the outer edge of the rear cover 7. Like the outlet grille of the front cowl 8, the grille part may be straight-line radial, arc radial or curved radial.

As an alternative, as shown in fig. 16, the grill part includes several lateral air inlet grill parts and several longitudinal air inlet grill parts, so that the distribution of the air flow flowing through the fan can be optimized, thereby improving the cooling effect of the fan, and the wind power can be improved as compared with the radial grill.

When the lateral air intake grill portion and the longitudinal air intake grill portion are both one, the lateral air intake grill portion and the longitudinal air intake grill portion may be symmetrically disposed along the center of the rear cover 7. When the transverse air inlet grid part and the longitudinal air inlet grid part are two or more, the transverse air inlet grid part and the longitudinal air inlet grid part can be alternatively arranged. By the arrangement, compared with the radial grid part, the transverse air inlet grid part adjacent to the longitudinal air inlet grid part can play a supporting role on the longitudinal air inlet grid part to a certain extent, and the longitudinal air inlet grid part adjacent to the transverse air inlet grid part can play a supporting role on the transverse air inlet grid part to a certain extent, so that the rear cover 7 has higher structural stability.

With continued reference to fig. 16, when the lateral air intake grill portion and the longitudinal air intake grill portion are both two, further, the two lateral air intake grill portions are arranged on one diagonal of the rectangle, and the two longitudinal air intake grill portions are arranged on the other diagonal of the same rectangle.

With continued reference to fig. 2 in conjunction with the associated structure of the connecting arm 6 described in embodiment 1, in some embodiments of the present disclosure, the back side of the rear cover 7 may be provided with a first mounting groove 15 in addition to the grid portion, the first mounting groove 15 being for mounting a portion of the connecting arm 6. Therefore, at least part of the connecting arm 6 is accommodated in the first mounting groove 15, so that the exposed part of the connecting arm 6 is reduced, and the attractive appearance is good.

Wherein the first mounting groove 15 may be constituted by a recess formed forward of the rear cover 7, in other words, the first mounting groove 15 is recessed forward with respect to the grid portion; the first mounting groove 15 may be defined by a protrusion provided protruding rearward on the rear cover 7 and the rear cover 7 together, in other words, the first mounting groove 15 is recessed rearward with respect to the grid portion. The preferred implementation manner of this embodiment is that the first mounting groove 15 is recessed forward relative to the grid part, so that the connection arm 6 is prevented from protruding out of the rear cover 7, and the aesthetic property is improved.

In this embodiment, the depth of the first mounting groove 15 is not limited, and preferably, the depth of the first mounting groove 15 is configured such that the rear wall of the connecting arm body 17 accommodated therein is flush with the back surface of the rear cover 7, and then the connecting arm body 17 can be regarded as a part of the fan cover, and the overall visual effect of the fan cover is good, and the aesthetic property is good.

Specifically, as can be seen from the foregoing, the connecting arm 6 includes a connecting arm body 17, and the connecting arm body 17 is used to connect the fan head and the base assembly 2, that is, the first mounting groove 15 may be used to receive the connecting arm body 17. It will be appreciated that the shape of the first mounting groove 15 is adapted to the shape of the connecting arm body 17.

When the connection arm body 17 is provided with the wire groove 20, the front surface of the first mounting groove 15 is closed, i.e., the wire groove 20 is closed to shield the wire penetrating into the wire groove 20. Thus, the wires received in the wire slots 20 are advantageously prevented from extending into the fan housing and causing winding on the fan blades 22 or the motor assembly 10. Specifically, a plate body is formed on the rear cover 7, and the plate body and the rear surface of the rear cover 7 together enclose a first mounting groove 15.

Further, when the wire groove 20 is covered with the wire dress cover 18, the wire dress cover 18 is also received within the first mounting groove 15. When the wire decorating cover 18 is screwed to the rear cover 7, the wire decorating cover 18 is provided with a threaded hole 44, the rear cover 7, especially the bottom wall of the first mounting groove 15, is provided with a through hole 43, and the center line of the through hole 43 is collinear with the center line of the threaded hole 44, so that the fastening screw is engaged with the threaded hole 44 after passing through the through hole 43.

Illustratively, the first mounting groove 15 may be provided on an upper and/or lower portion of the rear cover 7. When the upper and lower parts of the rear cover 7 are provided with the first mounting grooves 15, the connection arm body 17 is simultaneously received in the first mounting grooves 15 of the upper and lower parts, and the connection arm body 17 spans the upper and lower parts of the rear cover 7. In the example shown in fig. 2, the first mounting groove 15 is located only in the lower half of the rear cover 7, and the connection arm body 17 supports the lower half of the rear cover 7.

With continued reference to fig. 2, the top end of the first mounting groove 15 extends to the center of the rear cover 7, and the connecting arm body 17 accommodated in the first mounting groove 15 can support the center of the rear cover 7, so that the support is more stable. It should be noted that this configuration is particularly suitable for a case where the center of the fan head coincides with the projection of the center of the rear cover 7 on the vertical plane, and the support of the fan head by the connection arm 6 is stable. It is also noted that when the connecting arm body 17 is connected to the rear cover 7 through the mount table 12, the tip of the first mount groove 15 extends to the center of the rear cover 7 and communicates with a circular mount hole for fixing the mount table 12 on the rear cover 7. While the bottom end of the first mounting groove 15 extends to the bottom edge of the rear cover 7, thus providing an opportunity for the bottom end of the connection arm body 17 to extend outside the rear cover 7 to support the side wall of the rear cover 7.

In one embodiment described in embodiment 1, the connecting arm body 17 is provided with a plug 19 extending forward, and the plug 19 is used for plugging with a socket 16 provided on the rear cover 7. Correspondingly, in the present embodiment, the slot wall of the first installation slot 15 is provided with a slot 16 for inserting the plug 19, so that the plug 19 connected with the connection arm body 17 is inserted into the slot 16 while the connection arm body 17 is accommodated in the first installation slot 15.

Alternatively, the slot 16 may be provided at an edge position of the rear cover 7. Thus, the plug 19 inserted into the slot 16 is located in the rear cover 7 and also located at the edge of the rear cover 7, compared with the slot 16 located in the middle of the rear cover 7, thereby being beneficial to avoiding interference between the plug 19 inserted into the rear cover 7 and other components mounted in the fan cover.

Alternatively, as shown in fig. 2, when the bottom end of the first mounting groove 15 extends to the bottom edge of the rear cover 7, the slot 16 may be disposed on the side wall of the rear cover 7, and the plug 19 is inserted into the side wall of the rear cover 7, so that the plug 19 and the side wall of the rear cover 7 may form a part of the rear cover 7. Further, a space is provided between the rear side wall of the slot 16 and the back surface of the rear cover 7.

Example 6:

in the foregoing embodiment, the bottom end of the support rod is connected with the base assembly 2, the top end of the support rod is rotatably connected with the fan assembly, the support rod plays a supporting role on the fan assembly, and the fan assembly can rotate relative to the support rod of the base assembly 2, and the air supply angle is adjusted or the air supply area is enlarged by rotating the fan assembly. In the example shown in embodiment 1, a hinge seat is provided on the connecting arm body 17, and the hinge seat is rotatably connected to the support rod. Correspondingly, the top of bracing piece is equipped with installation cloud platform 3, and installation cloud platform 3 is articulated with articulated seat.

The base assembly 2 comprises a chassis 5, the bottom surface of the chassis 5 is a plane, and the chassis 5 is used for being placed on the ground, a workbench and the like. The chassis 5 is not limited to be cylindrical, and the cross section of the chassis 5 may be rectangular, square, elliptical, diamond, or other regular or irregular shapes, which is not limited in this embodiment.

Referring to fig. 1, in this embodiment, the support rod is a telescopic rod 4. When the telescopic rod is used, the length of the telescopic rod 4 can be changed by driving the telescopic rod 4 to move, and then the height of a fan assembly arranged on the supporting rod can be changed, so that the height of blown wind can be changed, different requirements of users can be met, and the telescopic rod is high in practicability. Illustratively, the telescoping rod 4 includes a first sleeve and a second sleeve sleeved outside the first sleeve, the first sleeve being slidable along an interior of the second sleeve. Wherein, the first sleeve pipe stretches out to the outer one end of second sleeve pipe and is connected with linking arm 6, and the one end that the second loop bar kept away from first sleeve pipe is connected with base subassembly 2.

The bottom end of the supporting rod is rotatably connected with the base assembly 2, namely, the supporting rod is rotatably arranged on the chassis 5 of the base assembly 2, and a containing groove is formed on the fan, and the supporting rod can be contained in the containing groove when rotating to a horizontal state, so that the fan cover and the chassis 5 are stacked together. The receiving groove may be formed on the chassis 5 of the base assembly 2, on the rear cover 7, or by both the chassis 5 and the rear cover 7.

Through above-mentioned setting, the bracing piece can be accomodate in the holding tank, and fan housing and chassis 5 stack are in the same place for whole fan occupies less space when not using the state, and then is convenient for transport and daily accomodate. In addition, the supporting rod can be prevented from being exposed to the outside, so that the fan in a non-use state is good in attractive appearance, and the supporting rod is prevented from being damaged due to the impact force of the outside. In addition, since the support bar is located at the rear of the fan assembly, the support bar is received in the receiving groove and the front cover 8 faces the outside of the fan.

For example, the top surface of the chassis 5 is formed with a first half groove, and the rear surface of the rear cover 7 is formed with a second half groove, and when the fan cover and the chassis 5 are stacked together, the first half groove and the second half groove communicate to together constitute a receiving groove.

By way of further example, the receiving groove is located on the chassis 5. Compared with the previous example, it is advantageous to avoid that the strength of the rear cover 7 is too low due to the grooves formed in the rear cover 7. It is worth noting that in this example, the two ends of the receiving groove extend to opposite edges of the chassis 5, respectively. Therefore, the size of the accommodating groove is as large as possible, so that the supporting rod can be accommodated conveniently, and the supporting rod can be accommodated in the accommodating groove smoothly.

When the supporting rod is the telescopic rod 4, the accommodating groove can be matched with the telescopic rod 4 extending to the longest length, and the telescopic rod 4 extending to any length can be accommodated in the accommodating groove, so that the accommodating is convenient; the telescopic rod 4 which can be contracted to the shortest can be matched, the size of the accommodating groove is small, the situation that the strength of the telescopic rod is reduced due to the fact that an oversized groove is formed in the rear cover 7 and/or the chassis 5 is avoided, when a fan needs to be accommodated, the telescopic rod 4 is slid to be contracted to the shortest, then the telescopic rod 4 is rotated, the telescopic rod 4 is accommodated in the accommodating groove, and the fan cover and the chassis 5 are stacked together.

The support rod is rotatably connected with the base assembly 2, and the support rod rotates relative to the base assembly 2 and is accommodated in the accommodating groove. Specifically, the support rod may be rotatably connected to the accommodating groove, that is, the support rod is rotatably installed in the accommodating groove. From this, the rotation connecting piece of bracing piece and holding tank is located the holding tank, then whole bracing piece can both accomodate to the holding tank in, and the aesthetic property is good.

The bottom end of the supporting rod is rotatably connected with the accommodating groove through a rotating shaft, specifically, two opposite side walls of the accommodating groove are provided with connecting holes, the two connecting holes are oppositely arranged, one end of the rotating shaft is rotatably arranged in one connecting hole, and the other end of the rotating shaft is rotatably arranged in the other connecting hole; the bottom of the supporting rod is provided with a connecting sleeve, the connecting sleeve is accommodated in the accommodating groove, one end of the connecting sleeve, deviating from the supporting rod, is sleeved on the rotating shaft, and then the supporting rod can rotate around the rotating shaft.

The bottom end of the supporting rod can be located at any position of the accommodating groove, namely, the supporting rod can be rotationally connected with any position of the accommodating groove, and the supporting rod can be rotated and accommodated in the accommodating groove. For example, the bottom end of the support bar may be located in the middle of the receiving groove or may be located near both end portions of the receiving groove.

In a preferred implementation manner of this embodiment, the bottom end of the supporting rod is located at one end of the accommodating groove, and then the top end of the supporting rod after rotation may be located at the other end of the accommodating groove, and the entire supporting rod is just placed in the accommodating groove. From this, compare with the bottom of bracing piece is located the middle part of holding tank, can occupy the holding tank after the bracing piece is accomodate the holding tank in this embodiment for the space utilization of holding tank is high.

On the basis of the above embodiment, the fan further comprises a locking mechanism capable of locking the support bar with the chassis 5 of the base assembly 2 so that the support bar cannot rotate relative to the chassis 5. And, the locking mechanism is also capable of unlocking the support bar from the chassis 5 so that the support bar can rotate relative to the chassis 5.

When the fan does not work, the supporting rod is contained in the containing groove; when the fan needs to be operated to reduce the temperature of the external environment, the locking mechanism is unlocked, so that the supporting rod can rotate relative to the chassis 5, and then the supporting rod is driven to rotate to an upright state to support the fan assembly, and the fan assembly is switched from the superposition state to the working state at the moment, so that the fan can work normally; and then, the locking mechanism is used for locking the supporting rod so as to prevent the supporting rod from rotating to cause the movement of the fan assembly when the fan is in a working state, thereby being beneficial to preventing the air outlet from being influenced.

The locking mechanism can comprise an outer sleeve sleeved outside the supporting rod, the outer sleeve can lock the supporting rod to prevent the supporting rod from rotating, and the outer sleeve can release the locking of the supporting rod so that the supporting rod can rotate.

In particular, the outer sleeve can lock or unlock the support rod and chassis 5 by moving up and down relative to the telescopic rod 4. Therefore, the locking state of the supporting rod can be switched only by moving the outer sleeve up and down, the action of locking and unlocking the supporting rod is simple, and the locking and unlocking supporting rod is convenient to adjust. The specific implementation mode of realizing the up-and-down movement of the outer sleeve relative to the support rod can be that the outer sleeve is in sliding connection with the support rod, and then the outer sleeve can slide up and down relative to the support rod so as to lock or unlock the support rod; or, the outer sleeve is in threaded connection with the support rod, so that the outer sleeve can rotate relative to the support rod to move up and down, and further locking or unlocking of the support rod is realized.

On the basis of this embodiment, the support rod further comprises an inner sleeve rotatably connected to the chassis 5, the inner sleeve being threadedly connected to the outer sleeve.

Example 7:

the present embodiment relates to a novel fan convenient for cleaning, as shown in fig. 1-8, including: the fan comprises a fan body 1 and a base assembly 2 rotatably connected with the fan body 1. In this embodiment, the base assembly 2 includes a mounting cradle head 3, a telescopic rod 4 and a chassis 5.

The chassis 5 is disc-shaped, and the telescopic rod 4 and the chassis 5 are assembled in a rotating way. The installation cloud platform 3 sets up the other end at telescopic link 4, and fan body 1 is connected with telescopic link 4 through installation cloud platform 3.

As shown in fig. 1 to 8, the fan body 1 includes: the connecting arm 6, the rear cover 7, the front cover 8, the locking assembly 9, the motor assembly 10 and the fan blade assembly 11.

The connecting arm 6 is rotatably assembled with the base assembly 2. The rear cover 7 is detachably mounted on the connection arm 6, and the front cover 8 is detachably assembled with the rear cover 7. The locking assembly 9 is disposed on the side of the connecting arm 6 near the front cover 8 and is rotatably assembled with the connecting arm 6. The locking assembly 9 is used to achieve a detachable assembly between the rear housing 7 and the connecting arm 6. The motor assembly 10 is provided on the connection arm 6 and is located in the rear cover 7. The fan blade assembly 11 is detachably mounted on the motor assembly 10 and can rotate synchronously with the output part of the motor assembly 10.

In this embodiment, as shown in fig. 1 to 8, the connection arm 6 is rotatably assembled with the mounting head 3 through a hinge shaft. The front cover 8 and the rear cover 7 are cylindrical as a whole. The inner side wall of the rear cover 7 is provided with a clamping projection 71, and the side wall of the front cover 8 is provided with a clamping groove 81 matched with the clamping projection 71. During installation, the clamping groove 81 on the front cover 8 is aligned with the clamping projection 71, then the front cover is pressed to one side of the rear cover 7, and when the clamping projection 71 falls into the clamping groove 81, the front cover 8 is rotated to enable the clamping projection 71 to be tightly matched with the clamping groove 81, so that the front cover 8 and the rear cover 7 are assembled.

Further, as shown in fig. 1 to 8, the connection arm 6 is provided with a mounting table 12 protruding therefrom, and the mounting table 12 is located at the center of the rear cover 7 and is used for the socket connection of the rear cover 7. The locking assembly 9 comprises: a first external thread 13 and a locking ring 14. The first external screw thread 13 is provided on the outer side wall of the mount 12. A locking ring 14 is provided in the rear housing 7, the locking ring 14 being adapted to be fitted with the first external thread 13, thereby fixedly mounting the rear housing 7 on the connecting arm 6.

Preferably, the locking ring 14 is generally annular in shape and has a diameter greater than the diameter of the mounting table 12. The outer sidewall of the locking ring 14 is provided with a tooth-like structure for preventing a user from slipping when rotating the locking ring 14.

In other embodiments, the locking assembly 9 comprises: the clamping part and the clamping ring. The fastening portion is provided on the mounting table 12. The clamping ring is arranged in the rear cover 7 and is used for being assembled with the clamping part in a clamping way, so that the rear cover 7 is fixedly arranged on the connecting arm 6.

Further, as shown in fig. 1 to 7, a first mounting groove 15 and a slot 16 are provided on the rear cover 7 at a side close to the connection arm 6, and the connection arm 6 includes: a connecting arm body 17, an electric wire decorative cover 18 and a plug connector 19. A wire slot 20 is arranged on the connecting arm body 17 near the first mounting slot 15, and the wire slot 20 is used for accommodating wires on the fan body 1. The wire dress cover 18 is adapted for mating engagement with the wire chase 20 to lock the wires within the wire chase 20. The plug 19 is arranged on one side of the connecting arm body 17 away from the mounting table 12 in a protruding manner, and the plug 19 is used for being plugged with the slot 16, so that the rear cover 7 is detachably mounted on the connecting arm 6.

Preferably, as shown in fig. 1-7, an anti-falling table 21 is convexly arranged on one side, close to the slot 16, of the plug connector 19, and the anti-falling table 21 is used for abutting against the inner side wall of the slot 16, so that the rear cover 7 is effectively prevented from falling out of the plug connector 19. The wire dress cover 18 is fixedly assembled with the connecting arm body 17 by passing through a screw. The side wall of the anti-falling table 21, which is close to one side of the front cover 8, is an inclined surface, so that the anti-falling protruding blocks can be conveniently clamped into the slots 16, and convenience in assembly between the connecting arms 6 and the rear cover 7 is ensured.

In other embodiments, as shown in fig. 3 and 4, a through hole 43 is provided in the first mounting groove 15, and a threaded hole 44 corresponding to the through hole 43 is provided in the connection arm 6. The connection arm 6 is assembled with the screw hole 44 by fastening a screw through the through hole 43, thereby achieving a fixed assembly between the connection arm 6 and the rear cover 7.

Further, as shown in fig. 1 to 8, the fan blade assembly 11 includes: fan blade 22 and mounting assembly 23. The fan blade 22 is detachably mounted on the motor assembly 10 and can rotate synchronously with the output part of the motor assembly 10. The mounting assembly 23 is disposed between the fan blade 22 and the motor assembly 10, and the mounting assembly 23 is used for detachably assembling the fan blade 22 and the motor assembly 10.

Specifically, the middle part of flabellum 22 is provided with installation head 24, and installation head 24 is close to rear cover 7 one side and is provided with second mounting groove 25, is provided with installation department 26 on the diapire of second mounting groove 25, and installation component 23 includes: the clamping table 27, the plug-in post 28, the plug-in seat and the damping ring 29.

As shown in fig. 1 to 8, the engagement table 27 is provided on an end surface of the output portion of the motor assembly 10 on a side remote from the connection arm 6. The clamping table 27 is used for clamping with the mounting portion 26, so that the fan blade 22 rotates synchronously therewith. The plug-in post 28 is arranged on the end face of the output part of the motor assembly 10 on the side remote from the connecting arm 6. The plug-in post 28 is located at the center of the end surface, and a ring groove is arranged on the plug-in post 28. The socket is disposed on the inner wall of the mounting head 24, and is used for plugging with the plugging post 28, so as to mount the fan blade 22 on the output part of the motor assembly 10. The socket is provided with a socket hole 30 for the socket post 28 to be inserted. The damping ring 29 is sleeved on the plug-in column 28 and is positioned in the ring groove. The damping ring 29 is used for abutting against the inner wall of the plug hole 30, so as to prevent the plug seat from being separated from the plug connector 19.

Preferably, as shown in fig. 1-8, the mounting portion 26 is a gear groove provided on the bottom wall of the second mounting groove 25, and the side wall is provided with teeth. The clamping table 27 is an arc-shaped rack matched with the gear groove, and two arc-shaped racks are symmetrically arranged. The gear groove and the arc-shaped rack can be assembled in an inserting mode at any angle, the problem that the fan blade 22 is inconvenient to install and detach due to the fact that an installation angle or an installation position is found during assembly is avoided, and convenience in assembly between the fan blade 22 and the motor assembly 10 is improved.

Further, as shown in fig. 1 to 8, a mounting post 31 is provided on the mounting table 12 at a side close to the front cover 8 in a protruding manner, the mounting post 31 is located at a center position of the mounting table 12, the motor stator 32 is fixedly mounted on the mounting post 31, and a mounting hole is provided on the mounting post 31. The motor assembly 10 includes: motor stator 32 and motor rotor 33. Wherein the fixing portion of the motor stator 32 is fixedly mounted on the mounting post 31. The motor rotor 33 is assembled with the motor stator 32, and after energization, the motor rotor 33 rotates around the motor stator 32.

Specifically, as shown in fig. 1 to 8, the motor rotor 33 includes: a rotating shaft 34, a motor cover 35 and a magnetic ring 36. The shaft 34 is fixedly mounted in the mounting hole and is rotatable relative to the mounting hole. The motor cover 35 is fixedly assembled with the rotating shaft 34 and sleeved on the motor stator 32, and the motor cover 35 is used for assembling the fan blades 22. The magnetic ring 36 is fixedly mounted to the motor housing 35 and is located between the motor housing 35 and the motor stator 32.

Preferably, a copper sleeve 37 is arranged between the rotating shaft 34 and the mounting hole, and a clamping ring 38 is arranged on one side of the rotating shaft 34 away from the motor cover 35. The snap ring 38 is used to prevent the shaft 34 from being disengaged from the copper sleeve 37. The rotary shaft 34 and the motor cover 35 are integrally formed. The arc-shaped rack is arranged on the motor cover 35 and is integrally formed with the motor cover 35. The plug-in post 28 is arranged on the motor housing 35 and is integrally formed with the motor housing 35.

The working principle of the present embodiment is approximately as follows: when the fan main body is disassembled, the front cover 8 is rotated to enable the clamping convex blocks 71 to be separated from the clamping grooves 81, and the front cover 8 is disassembled from the rear cover 7; then, the fan blade 22 is drawn to the side far away from the rear cover 7, so that the damping ring 29 is separated from the abutting state with the side wall of the plug hole 30, and the fan blade 22 is detached from the motor assembly 10; and then the locking ring 14 is rotated, so that the locking ring 14 is separated from the mounting table 12, and then the connecting arm 6 is pushed to the side far away from the front cover 8, so that the mounting table 12 is separated from the rear cover 7, meanwhile, the anti-falling table 21 is separated from the inner wall of the slot 16, and the plug 19 is separated from the slot 16, so that the fan rear cover 7, the motor assembly 10 and the connecting arm 6 are separated, and the disassembly of the fan main body is completed, and the fan main body has the advantages of convenience in disassembly and cleaning, convenience in installation after disassembly, high stability after installation and good firmness.

Example 8:

the difference between this embodiment and embodiment 1 is mainly that, as shown in fig. 9, in this embodiment, a mounting head 24 is provided at the middle of the fan blade 22, a second mounting groove 25 is provided on the side of the mounting head 24 close to the rear cover 7, a mounting notch is provided at the bottom of the second mounting groove 25, and the mounting assembly 23 includes: a clamping table 27, a threaded post 39 and a fixed cover 40.

The engagement table 27 is provided on an end surface of the output portion of the motor assembly 10 on the side away from the connecting arm 6. The clamping table 27 is used for clamping with the mounting notch, so that the fan blade 22 rotates synchronously with the mounting notch. A threaded post 39 is provided on the end surface of the output portion of the motor assembly 10 on the side remote from the connecting arm 6. The threaded post 39 is located at the center of the end face. The fixed cover 40 is disposed on the side of the fan blade 22 remote from the output portion of the motor assembly 10. The fixing cover 40 is screw-fitted with the screw post 39, and the fixing cover 40 serves to fixedly mount the fan blade 22 on the output portion of the motor assembly 10.

Preferably, the installation notch is a gear groove with teeth on the side wall, the clamping table 27 is an arc-shaped rack matched with the gear groove, and the arc-shaped racks are symmetrically provided with two racks. The gear groove and the arc-shaped rack can be assembled in an inserting mode at any angle, the problem that the fan is inconvenient to install and detach due to the fact that the installation angle or the installation position is found during assembly is avoided, and convenience in assembly between the fan blade 22 and the motor assembly 10 is improved. In other embodiments, the threaded post 39 may be replaced by a clamping post or a buckle, and the corresponding fixing cover 40 is clamped with the clamping post or the buckle, so as to achieve the fixing assembly of the fan blade 22.

Example 9:

the difference between this embodiment and embodiments 1 and 2 is mainly that, as shown in fig. 10, in this embodiment, a mounting head 24 is provided at the middle of a fan blade 22, a second mounting groove 25 is provided on the mounting head 24, and a mounting assembly 23 includes: the internal thread 41 and the second external thread 42.

The female screw 41 is provided on the inner wall of the second mounting groove 25. A second external screw thread 42 is provided on the outer sidewall of the output part of the motor assembly 10, and the second external screw thread 42 is adapted to be assembled with the internal screw thread 41, so that the fan blade 22 is fixedly mounted on the output part of the motor assembly 10 and can move synchronously therewith

In the present invention, unless explicitly stated otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as fixed connections, as removable connections, or as integral forms, as mechanical connections; either directly or indirectly, through an intervening medium, unless otherwise expressly defined. 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.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The connecting arm is used for installing the fan cover on the supporting rod of the base assembly and is characterized by comprising a connecting arm body, wherein two ends of the connecting arm body are respectively connected with the supporting rod and the fan cover;

the connecting arm body is provided with a wire slot for accommodating a wire; the connecting arm body is provided with a wire passing hole which penetrates through the connecting arm body and is communicated with the wire slot, and the wire passing hole is used for the wire to pass through;

the connecting arm is provided with a threaded hole, the fan cover is provided with a through hole corresponding to the threaded hole, and the fastening screw penetrates through the through hole to be assembled with the threaded hole so as to realize the fixed assembly of the connecting arm and the fan cover.

2. The connecting arm according to claim 1, further comprising a wire dress cover, wherein the wire slot cover is provided with the wire dress cover, wherein the threaded hole is provided in the wire dress cover, and wherein the through hole is provided in a rear cover of the fan cover.

3. The connector arm of claim 2, wherein the wire dress cover is snap-fit with the connector arm body.

4. A connecting arm according to any one of claims 1-3, wherein the connecting arm body is provided with a hinge seat for rotational connection with the support bar.

5. The connecting arm according to claim 4, wherein the hinge seat is provided at a bottom end of the connecting arm body.

6. The connecting arm of claim 5, wherein the hinge mount extends rearward.

7. The connecting arm according to claim 5, wherein the hinge base includes a hinge housing extending rearward from the connecting arm body, the hinge housing being formed with a hinge shaft for rotational connection with the support rod, the hinge shaft being provided with a wire passing passage along an axial direction thereof, the wire passing hole being provided at a position of the connecting arm body corresponding to the hinge housing.

8. The connecting arm of claim 7, wherein the hinge housing comprises a first hinge housing and a second hinge housing disposed in parallel, the first hinge housing and the second hinge housing being formed with opposing first hinge axis and second hinge axis.

9. A connecting arm according to any one of claims 1-3, wherein the connecting arm body is provided with a plug extending forward, the plug being adapted to plug into a socket provided in the rear housing of the fan housing.

10. The connecting arm according to claim 9, wherein the plug is provided at a bottom end of the connecting arm body.

11. The connecting arm of claim 10, wherein the plug is provided with an anti-drop table for abutting against an inner sidewall of the socket.

12. The connecting arm of claim 11, wherein the front sidewall of the anti-drop table is formed as an inclined surface.

13. A connecting arm according to any one of claims 1-3, characterized in that the connecting arm body is provided with a mounting table for mounting the fan housing.

14. The connecting arm of claim 13, wherein the mounting stand is provided at a top end of the connecting arm body.

15. The connection arm of claim 14, wherein the mounting block is sleeved or snapped onto a rear shroud of the fan shroud.

16. The connecting arm of claim 15, wherein the mounting block is formed in a circular shape and includes a forwardly projecting side wall, the rear housing being formed with a circular mounting hole, at least a portion of the side wall extending into the circular mounting hole and being either sleeved or snapped into engagement with the rear housing.

17. The connecting arm of claim 16, wherein a locking assembly is provided within the fan housing for preventing movement of the rear housing in the axial direction thereof.

18. The connection arm of claim 17, wherein the locking assembly includes a locking ring disposed within the fan housing, the locking ring being removably coupled to the mounting table, the locking ring having an outer diameter that is greater than an inner diameter of the circular mounting hole.

19. The connecting arm of claim 18, wherein the mounting block has a first external thread formed on a side wall thereof and the locking ring has a first internal thread formed on an inner wall thereof that mates with the first external thread.

20. The connecting arm of claim 19, wherein the outer surface of the locking ring is provided with a slip prevention.

21. The connecting arm of claim 20, wherein the slip prevention portion is a tooth-like structure or a stripe-like structure provided on an outer surface of the locking ring.

22. The connection arm of claim 18, wherein the locking assembly comprises a snap ring disposed within the fan housing, the snap ring being removably coupled to the mounting table, an outer diameter of the snap ring being greater than an inner diameter of the circular mounting hole.

23. The connecting arm of claim 22, wherein the mounting table is provided with a snap-fit portion, and the snap-fit ring is configured to snap-fit with the snap-fit portion.

24. The connecting arm of claim 17, wherein the mounting block is provided with a forwardly projecting mounting post for mounting a motor assembly.

25. The connection arm of claim 24, wherein the mounting post is used to secure a motor stator.

26. The connecting arm of claim 24, wherein the mounting post is centrally located on the mounting table.

27. The connecting arm of claim 25, wherein the mounting post is provided with a mounting hole along an axial direction thereof for rotatably mounting a shaft provided on a motor rotor for driving the fan blade assembly to rotate.

28. The connection arm of claim 27, wherein the center of the mounting table is at the same height as the center of the fan housing.

29. The connecting arm of claim 28, wherein the center of the mounting platform is located on an extension of the axis of the motor shaft that drives rotation of the fan blade assembly.

30. A fan assembly comprising a fan head and the connecting arm of any of claims 1-29;

the fan head comprises a fan cover, a fan blade assembly, a mounting table and a motor assembly;

The fan blade component is arranged in the fan cover;

the mounting table is fixed relative to the fan cover and comprises a mounting column extending forwards;

the motor assembly comprises a motor stator and a motor rotor for driving the fan blade assembly to rotate, the motor stator is detachably fixed on the mounting column, the motor rotor is in running fit with the motor stator, and the motor rotor and the motor stator are separable;

the fan cover is fixedly assembled with the connecting arm, the connecting arm is provided with a threaded hole, the fan cover is provided with a through hole corresponding to the threaded hole, and the fastening screw penetrates through the through hole to be assembled with the threaded hole.

31. The fan assembly of claim 30 wherein the mounting post is provided with a mounting hole along an axial direction thereof, and the motor rotor includes a shaft inserted in the mounting hole and rotatably coupled to the mounting post.

32. The fan assembly of claim 31 wherein a collar is mounted within the mounting hole, the collar being mounted over the shaft, the shaft being rotatable relative to the collar;

the first end of the rotating shaft is provided with a clamping ring, the ring sleeve is positioned between the clamping ring and the second end of the rotating shaft, and the outer diameter of the clamping ring is larger than the inner diameter of the ring sleeve.

33. The fan assembly of claim 32 wherein the collar is a copper collar.

34. The fan assembly of any of claims 30-33 wherein the motor rotor is sleeved outside the motor stator, the motor stator being formed in a ring shape and being fixedly sleeved on the mounting post; or the motor stator is sleeved outside the motor rotor.

35. The fan assembly of any of claims 31-33 wherein the motor rotor further comprises a motor cover and a magnetic ring disposed between the motor cover and the motor stator;

the rotating shaft is fastened in the cavity of the motor cover and extends towards the mounting column along the axis direction of the magnetic ring.

36. The fan assembly of claim 35 wherein the motor housing and shaft are formed as a unitary structure by an integral process.

37. The fan assembly of any of claims 30-33 wherein the fan blade assembly is removably mounted to the motor rotor.

38. The fan assembly of claim 37 wherein the motor rotor is threadably engaged with the fan blade assembly.

39. The fan assembly of claim 38 wherein the motor rotor is provided with an arcuate rack in threaded engagement with the fan blade assembly, the arcuate rack having a tooth width extending along the rotational axis of the motor rotor.

40. The fan assembly of claim 39 wherein the motor rotor is provided with two arcuate racks on either side of the axis of rotation that are symmetrical about the axis of rotation.

41. The fan assembly of claim 40 wherein the arcuate rack is provided on a front surface of the motor rotor.

42. The fan assembly according to any of claims 30-33, wherein the motor rotor is provided with a peg, and the center of the fan blade assembly is provided with a socket that pegs with the peg.

43. The fan assembly of claim 42 wherein the peg extends forward of the motor rotor;

the socket is provided with a socket hole matched with the socket column.

44. The fan assembly of claim 43, wherein the plug post is provided with a circumferential groove, and wherein a damping ring is mounted in the circumferential groove.

45. The fan assembly of any of claims 30-33 wherein the motor rotor is provided with a threaded post and the center of the fan blade assembly is provided with a fixed cover that mates with the threaded post.

46. The fan assembly of claim 37 wherein the threaded engagement of the motor rotor with the fan blade assembly is configured to rotate in a direction in which the motor rotor and the fan blade assembly are screwed when the motor rotor rotates the fan blade assembly.

47. The fan assembly of any of claims 30-33 wherein the fan housing comprises a front housing and a rear housing, the front housing and rear housing being removably assembled;

the through hole is arranged on the rear cover.

48. The fan assembly of claim 47 wherein the front and rear covers are snap fit.

49. The fan assembly of claim 48 wherein the front and rear shrouds are cylindrical or square.

50. The fan assembly of claim 48 wherein the rear end of the front shroud has the same shape as the front end of the rear shroud.

51. The fan assembly of claim 50 wherein the rear end of the front shroud is received in the front end opening of the rear shroud or the front end of the rear shroud is received in the rear end opening of the front shroud.

52. The fan assembly of claim 51 wherein an outer surface of the side wall of the front shroud is in contact with an inner surface of the side wall of the rear shroud; alternatively, the inner surface of the side wall of the front cover is in contact with the outer surface of the side wall of the rear cover.

53. The fan assembly of claim 51, wherein a clamping groove is formed in a side wall of the front cover, and a clamping projection matched with the clamping groove is formed in a side wall of the rear cover; or alternatively, the process may be performed,

the side wall of the rear cover is provided with a clamping groove, and the side wall of the front cover is provided with a clamping projection matched with the clamping groove.

54. The fan assembly of claim 50 wherein a rear face of the front shroud abuts a front face of the rear shroud; or, the rear end of the front cover is provided with a step surface which is in contact with the front end surface of the rear cover; alternatively, a stepped surface is formed at the front end of the rear cover, which abuts against the rear end surface of the front cover.

55. The fan assembly of claim 54 wherein the junction of the front shroud and the rear shroud transitions smoothly.

56. The fan assembly of claim 47 wherein the back face of the back shroud includes a grid portion and a first mounting slot for receiving at least a portion of the connecting arm.

57. The fan assembly of claim 56 wherein the first mounting slot is located in a lower half of the rear housing.

58. The fan assembly of claim 57 wherein a top end of the first mounting slot extends to a center of the rear housing; and/or the bottom wall of the first mounting groove is provided with the through hole.

59. The fan assembly of claim 56 wherein the bottom end of the first mounting slot extends to a bottom edge of the rear housing.

60. The fan assembly of claim 56 wherein a front surface of the first mounting slot is closed to conceal wires passing through the wire slots of the connecting arms.

61. The fan assembly of claim 56 wherein the first mounting slot is recessed forward relative to the grill portion.

62. The fan assembly of claim 56 wherein the slot wall of the first mounting slot is provided with a slot for snap-engagement with the spigot of the connecting arm.

63. The fan assembly of claim 62 wherein the slot is located at an edge of the rear housing.

64. The fan assembly of claim 62 wherein the slot is provided in a sidewall of the rear housing.

65. The fan assembly of claim 64 wherein the rear sidewall of the slot is spaced from the rear face of the rear housing.

66. The fan assembly of claim 38 wherein the fan blade assembly comprises: the mounting head and a plurality of fan blades radially arranged on the periphery of the mounting head, and the mounting head is mounted on the motor rotor.

67. The fan assembly of claim 66 wherein the mounting head is sleeved outside of the motor rotor.

68. The fan assembly of claim 67 wherein the mounting head includes a second mounting groove having a tooth profile disposed thereon for threaded engagement with the motor rotor, the tooth width of the tooth profile extending in the direction of the rotational axis of the motor rotor.

69. The fan assembly of claim 68 wherein a bottom of the second mounting groove is provided with a tooth that threadably mates with the arcuate rack of the front surface of the motor rotor.

70. The fan assembly of claim 68 wherein the second mounting groove has a socket at a bottom thereof for receiving a socket post provided on the motor rotor.

71. The fan assembly of claim 70 wherein the socket is located in the center of the second mounting slot.

72. The fan assembly of claim 68 wherein the mounting head comprises a mounting head body having a front opening and a securing cap disposed at the front opening of the mounting head body and surrounding the mounting head body with the second mounting slot.

73. The fan assembly of claim 72 wherein a side of the stationary cover facing the motor assembly is provided with a third mounting groove threadedly coupled to a threaded post provided on the motor rotor.

74. The fan assembly of claim 67 wherein the mounting head includes a second mounting groove, a second internal thread on a groove wall of the second mounting groove, and a second external thread on the motor rotor that mates with the second internal thread.

75. The fan assembly of any of claims 30-33 wherein the fan housing comprises a front housing having radially arranged air outlet grill and a rear housing having a rear face with a plurality of transverse air inlet grill portions and a plurality of longitudinal air inlet grill portions;

the through hole is arranged on the rear cover.

76. The fan assembly of claim 75 wherein the transverse air intake grill portions and the longitudinal air intake grill portions are alternately disposed.

77. The fan assembly of claim 75 wherein two of the transverse air intake grill sections are disposed on one diagonal of a rectangle and two of the longitudinal air intake grill sections are disposed on the other diagonal of the same rectangle.

78. A fan, comprising: a base assembly and the fan assembly of claim 31, the fan assembly rotatably mounted to a support bar of the base assembly.

79. The fan of claim 78 wherein the support pole is telescoping.

80. The fan of claim 78 or claim 79 wherein the support bar is rotatably mounted to a chassis of the base assembly and the support bar is receivable within a receiving slot formed by the chassis and/or a fan housing of the fan assembly to stack the fan housing and the chassis together.

81. The fan as recited in claim 80 wherein the receiving slot is located on the chassis, the receiving slot extending at opposite ends to opposite edges of the chassis.

82. The fan as recited in claim 81 wherein the support bar is rotatably mounted within the receiving slot.

83. The fan as recited in claim 82 wherein the support bar is adjacent one of the ends of the receiving slot.

84. The fan of claim 83 wherein the support bar is located at one of the ends of the receiving slot.

85. The fan of any of claims 78-79, further comprising a locking mechanism;

the locking mechanism can lock the supporting rod and the chassis of the base assembly so that the supporting rod cannot rotate relative to the chassis; the method comprises the steps of,

the locking mechanism is also capable of unlocking the support bar from the chassis to enable the support bar to rotate relative to the chassis.

86. The fan as recited in claim 85, wherein the locking mechanism comprises an outer sleeve that fits over the support pole.

87. The fan of claim 86 wherein the outer sleeve locks or unlocks the support pole and chassis by moving up and down relative to the support pole.

88. The fan of claim 86 wherein the outer sleeve is threadably connected to the support rod.

89. The fan as recited in claim 86 wherein the support bar comprises an inner sleeve rotatably coupled to the chassis of the base assembly, the outer sleeve being threadably coupled to the inner sleeve.

90. The fan according to any of claims 78-79, wherein the top end of the support bar is provided with a mounting head, the mounting head being rotatably connected to the connection arm of the fan assembly.