CN111779692A

CN111779692A - Fan with cooling device

Info

Publication number: CN111779692A
Application number: CN201910274955.9A
Authority: CN
Inventors: 吴永强; 康瑞祥; 杨忠; 严凤喜; 刘维亮
Original assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-10-16
Anticipated expiration: 2039-04-04
Also published as: CN111779692B

Abstract

The invention discloses a fan, comprising: the supporting seat comprises two supporting arms which are oppositely arranged; the fan head is arranged between the two support arms, and the left side part and the right side part of the fan head are respectively and rotatably connected with the two support arms; and the rotating assembly is connected with the fan head and the supporting arm and comprises a shaft sleeve and a rotating shaft which is rotatably arranged in a sleeve hole of the shaft sleeve, one of the shaft sleeve and the rotating shaft is connected with the supporting arm through a first buckle structure and a first bolt joint structure, and/or the other of the shaft sleeve and the rotating shaft is connected with the fan head through a second buckle structure and a second bolt joint structure. According to the fan, the rotating shaft and the supporting arm and/or the shaft sleeve and the fan head are connected in a manner of combining the buckle structure and the screw connection structure, so that the assembly time of the rotating assembly, the supporting arm and the fan head can be reduced, and the assembly efficiency is improved; the connection strength between the rotating assembly and the supporting arm and between the rotating assembly and the fan head can be improved, and therefore the rotating stability of the fan head can be improved.

Description

Fan with cooling device

Technical Field

The invention relates to the technical field of air conditioning, in particular to a fan.

Background

In the related art, the fan generally includes a supporting base, a fan head, and two rotating assemblies, wherein two supporting arms are disposed at an upper end of the supporting base, and left and right side portions of the fan head are rotatably mounted on the two supporting arms of the supporting base through the two rotating assemblies, respectively.

In this technique, the rotating assembly is usually connected to the fan head and the support arm by a plurality of screws; therefore, the connection between the rotating assembly and the fan head and the supporting arm is complex, and the assembly is time-consuming.

Disclosure of Invention

The invention mainly aims to provide a fan, and aims to solve the technical problem that in the related art, the assembly of a rotating assembly, a fan head and a supporting arm is time-consuming.

To achieve the above object, the present invention provides a fan, including:

the supporting seat comprises two supporting arms which are oppositely arranged;

the fan head is arranged between the two supporting arms, and the left side part and the right side part of the fan head are respectively rotatably connected with the two supporting arms; and

the rotating assembly is connected with the fan head and the supporting arm; the rotating assembly comprises a shaft sleeve and a rotating shaft which is rotatably arranged in a sleeve hole of the shaft sleeve, one of the shaft sleeve and the rotating shaft is connected with the supporting arm through a first buckle structure and a first screw joint structure, and/or the other of the shaft sleeve and the rotating shaft is connected with the fan head through a second buckle structure and a second screw joint structure.

Optionally, the rotating shaft includes a rotating body and a connecting protrusion protruding from an outer peripheral surface of the rotating body, the rotating body is rotatably mounted in the sleeve hole of the shaft sleeve, and the connecting protrusion is connected to the fan head, or the connecting protrusion is connected to the supporting arm.

Optionally, the connecting projection is annular; and/or the presence of a gas in the gas,

the connecting convex part is arranged close to one end of the rotating body; and/or the presence of a gas in the gas,

the connecting convex part is plate-shaped; and/or the presence of a gas in the gas,

the connecting convex part protrudes out of the peripheral surface of the shaft sleeve.

Optionally, a connection substrate arranged opposite to the end of the rotating shaft and a surrounding plate extending towards the direction close to the fan head are arranged at the upper end of the support arm, a mounting groove is formed between the surrounding plate and the connection substrate, and the rotating assembly is mounted in the mounting groove.

Optionally, the rotating shaft is connected with the supporting arm;

the inner side of the enclosing plate is convexly provided with a limiting convex part which is arranged at an interval with the connecting substrate, and the connecting convex part of the rotating shaft is clamped between the limiting convex part and the connecting substrate; and/or the presence of a gas in the gas,

the coaming is arranged into a semi-annular structure.

Optionally, the rotating shaft is connected with the supporting arm;

the first bolt joint structure comprises a first locking screw, and the first locking screw is connected with the connecting convex part of the rotating shaft and the connecting substrate.

Optionally, the rotating shaft is connected with the supporting arm;

the first buckle structure comprises a jack arranged on the enclosing plate and a plug-in buckle convexly arranged on the connecting convex part of the rotating shaft, and the plug-in buckle is inserted in the jack.

Optionally, the first screwing structure comprises a first locking screw, and the first locking screw connects the connecting convex part of the rotating shaft and the connecting base plate; the number of the first locking screws is two, and the two first locking screws are respectively arranged on two sides of the inserting buckle; and/or the presence of a gas in the gas,

the jack is arranged between the limiting convex part on the enclosing plate and the connecting substrate.

Optionally, the shaft sleeve is connected with the fan head;

the fan head comprises a shell, wherein a clamping convex part is arranged on the surface of the shell, the second buckling structure comprises a rotary groove and a convex part, the rotary groove and the convex part are arranged on the clamping convex part, the rotary convex part is arranged on the outer peripheral surface of the shaft sleeve, and the rotary convex part is clamped in the rotary groove.

Optionally, the joint convex part including protruding locate housing face support convex part, and the side direction protrusion in support the screens convex part of convex part, inject jointly between screens convex part, the support convex part and the housing face and revolve the groove.

Optionally, the joint convex part still includes protruding enhancement convex part of locating housing face, the enhancement convex part is connected the screens convex part with the casing.

Optionally, the rotary protrusion is provided in plurality at intervals in a circumferential direction of the sleeve.

Optionally, the second buckle structure further comprises a gear convex portion protruding from the surface of the housing, and the sleeve wall of the shaft sleeve is disposed between the gear convex portion and the clamping convex portion.

Optionally, the gear boss extends in a circumferential direction of the shaft sleeve; and/or the presence of a gas in the gas,

the gear convex parts are arranged in a plurality at intervals in the circumferential direction of the shaft sleeve.

Optionally, the second screwing structure includes a second locking screw, a first screwing position disposed on the casing of the fan head, and a second screwing position disposed on the shaft sleeve, and the second locking screw connects the first screwing position and the second screwing position.

Optionally, the first screw joint comprises a first screw hole column protruding from the surface of the shell; and/or the presence of a gas in the gas,

the second screw joint comprises a second screw hole column arranged on the shaft sleeve; and/or the presence of a gas in the gas,

the first bolt joint comprises a connecting through hole penetrating through the wall of the shell, and the second locking screw penetrates through the connecting through hole to be connected with the second bolt joint.

Optionally, the second screwing positions are arranged on the shaft sleeve at intervals in the circumferential direction, the shaft sleeve has two rotary protrusions, and the second screwing positions and the rotary protrusions are sequentially distributed at intervals.

Optionally, the fan head includes a first axial-flow wind wheel and a second axial-flow wind wheel which are axially adjacent to each other, and an air supply direction of the first axial-flow wind wheel is the same as an air supply direction of the second axial-flow wind wheel.

Optionally, the rotational speed of the first axial flow rotor is equal to the rotational speed of the second axial flow rotor; alternatively, the first and second electrodes may be,

the rotating speed of the first axial flow wind wheel is larger than or smaller than that of the second axial flow wind wheel.

According to the fan, the rotating shaft and the supporting arm and/or the shaft sleeve and the fan head are connected in a manner of combining the buckle structure and the screw connection structure, so that the assembly time of the rotating assembly, the supporting arm and the fan head can be reduced, and the assembly efficiency is improved; the connection strength and the connection reliability between the rotating assembly and the supporting arm and between the rotating assembly and the fan head can be improved, so that the rotation stability of the fan head can be improved.

Drawings

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

FIG. 1 is a schematic structural diagram of a fan according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a cross-sectional view of the fan shown in FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a schematic view of a state of the rotating assembly shown in FIG. 1;

FIG. 7 is a schematic view of another state of the rotating assembly of FIG. 6;

FIG. 8 is a schematic view of the fan head of FIG. 1;

FIG. 9 is an enlarged view of a portion of FIG. 8 at D;

FIG. 10 is a schematic cross-sectional view of the support base shown in FIG. 1;

fig. 11 is a partial enlarged view at E in fig. 10.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Fan with cooling device	212	Gear convex part
10	Supporting seat	213	Connecting via
				11	Support arm	214	First screw hole column
111	Connection substrate	215	Annular connecting rib
				1111	First connecting hole	30	Rotating assembly
112	Boarding board	31	Shaft sleeve
				1121	Limiting convex part	311	Rotary convex
1122	Jack hole	312	Threaded connection hole
				113	Mounting groove	313	Second screw hole column
20	Fan head	32	Rotating shaft
				21	Shell body	321	Rotating body
211	Clamping convex part	322	Connecting projection
				2111	Rotary groove	3221	Eye-splice
2112	Supporting convex part	3222	Second connecting hole
				2113	Clamping convex part	41	First locking screw
2114	Reinforcing protrusion	42	Second locking screw

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a fan.

In an embodiment of the present invention, as shown in fig. 1 to 3, the fan 100 includes:

the supporting seat 10 comprises two supporting arms 11 which are oppositely arranged;

the fan head 20 is arranged between the two support arms 11, and the left side part and the right side part of the fan head 20 are respectively and rotatably connected with the two support arms 11; and

a rotating assembly 30 connecting the fan head 20 and the support arm 11; the rotating assembly 30 comprises a shaft sleeve 31 and a rotating shaft 32 rotatably mounted in a sleeve hole of the shaft sleeve 31, one of the shaft sleeve 31 and the rotating shaft 32 is connected with the support arm 11 through a first snap structure and a first screw structure, and/or the other one of the shaft sleeve 31 and the rotating shaft 32 is connected with the fan head 20 through a second snap structure and a second screw structure.

Specifically, the support base 10 is used for supporting and mounting the fan head 20, and the shape of the support base 10 can be adjusted according to actual design requirements, which is not limited in the present invention.

In particular, fan head 20 is used to modify the air flow during operation to deliver air to the ambient environment (fan 100). Specifically, the fan head 20 generally includes a housing 21, a wind wheel (not shown) mounted in the housing 21, and a motor (not shown) for driving the wind wheel to rotate.

Specifically, the left side and the right side of the fan head 20 are respectively rotatably connected with the two support arms 11; thus, the fan head 20 can swing in a pitching manner, so that air can be supplied in upward (or obliquely upward), horizontal forward, oblique downward and other directions, the air supply range can be expanded, and the air conditioning effect can be improved.

In particular embodiments, one may: the shaft sleeve 31 is connected with the supporting arm 11, and the rotating shaft 32 is connected with the fan head 20, so that the fan head 20 is rotatably connected with the supporting arm 11; it is also possible to make: the shaft sleeve 31 is connected with the fan head 20, and the rotating shaft 32 is connected with the supporting arm 11, so that the fan head 20 is rotatably connected with the supporting arm 11; hereinafter, the description will be given by taking an example of "the shaft sleeve 31 is connected to the fan head 20, and the rotating shaft 32 is connected to the support arm 11". It should be noted that, according to the following disclosure, the structural form of "the shaft sleeve 31 is connected to the supporting arm 11, and the rotating shaft 32 is connected to the fan head 20" is easily conceived by those skilled in the art, and therefore, a detailed description thereof is not necessary.

Specifically, the boss 31 is connected to the case 21 of the fan head 20. In the present embodiment, as shown in fig. 2, 3, 5 to 7, the rotating shaft 32 is connected to the supporting arm 11 through a first fastening structure and a first screw structure, and the shaft sleeve 31 is connected to one side of the housing 21 through a second fastening structure and a second screw structure; thereby rotatably coupling the fan head 20 to the support arm 11.

It can be understood that the fan 100 of the present invention connects the rotating shaft 32 and the supporting arm 11 through the first fastening structure and the first screwing structure; during the assembly, can be earlier preliminary location and fixed pivot 32 and support arm 11 through first buckle structure earlier, then the rethread first spiro union structure is further connected and is fixed pivot 32 and support arm 11 to can make the connection between pivot 32 and the support arm 11 become simple, convenient. Moreover, the rotating shaft 32 and the supporting arm 11 are connected in a manner of combining the buckling structure and the screwing structure, so that the connection strength between the rotating shaft 32 and the supporting arm 11 can be improved, and the rotation stability of the fan head 20 is improved; the number of the first screw connection structures can be reduced, so that the assembly time can be shortened, the assembly efficiency can be improved, and the problem of insufficient assembly space (caused by industrial design and appearance) can be solved. In addition, manufacturability of the shaft 32 and the support arm 11 may also be provided.

In short, the fan 100 of the present invention connects the rotating shaft 32 and the supporting arm 11 through the first fastening structure and the first screwing structure, which not only improves the connection strength and the connection reliability between the rotating shaft 32 and the supporting arm 11, but also reduces the assembly time and improves the assembly efficiency.

Similarly, the fan 100 of the present invention connects the shaft sleeve 31 and (the casing 21 of) the fan head 20 through the second snap structure and the second screw structure; when assembling, can be earlier preliminary location and fixed axle sleeve 31 and fan head 20 through second buckle structure earlier, then rethread second spiro union structure further connects and fixes axle sleeve 31 and fan head 20 to can make the connection between axle sleeve 31 and the fan head 20 become simple, convenient. Moreover, the shaft sleeve 31 and the fan head 20 are connected in a mode of combining the buckling structure and the screwing structure, so that the connection strength between the shaft sleeve 31 and the fan head 20 can be improved, and the rotation stability of the fan head 20 is improved; the number of the second screw connection structures can be reduced, so that the assembly time can be shortened, the assembly efficiency can be improved, and the problem of insufficient assembly space (caused by industrial design and appearance) can be solved. In addition, manufacturability of the sleeve 31 and (the housing 21 of) the fan head 20 may also be provided.

In short, the fan 100 of the present invention connects the shaft sleeve 31 and (the casing 21 of) the fan head 20 through the second snap structure and the second screw structure, which not only can improve the connection strength and the connection reliability between the shaft sleeve 31 and the fan head 20, but also can reduce the assembly time and improve the assembly efficiency.

Therefore, the fan 100 of the present invention connects the rotating shaft 32 and the supporting arm 11, the shaft sleeve 31 and the fan head 20 by combining the snap structure and the screw structure, which not only reduces the assembly time when the rotating assembly 30 is assembled with the supporting arm 11 and the fan head 20, but also improves the assembly efficiency; the connection strength and the connection reliability between the rotating assembly 30 and the support arm 11 and the fan head 20 can be improved, and the rotation stability of the fan head 20 can be improved.

It should be noted that the rotatable connection between the sleeve 31 and the rotating shaft 32 can be realized by referring to the related art, and need not be described in detail herein.

Further, as shown in fig. 2, 3, 5 to 7, the rotating shaft 32 includes a rotating body 321 and a connecting protrusion 322 protruding from the outer peripheral surface of the rotating body 321, the rotating body 321 is rotatably installed in the sleeve hole of the sleeve 31, and the connecting protrusion 322 is connected to the fan head 20, or the connecting protrusion 322 is connected to the supporting arm 11. Specifically, the connection protrusion 322 is connected to the support arm 11 through a first snap structure and a first screw structure.

Thus, the connection protrusion 322 is provided to facilitate the connection between the rotation shaft 32 and the support arm 11.

Alternatively, as shown in fig. 2 to 7, the rotating body 321 is provided as a hollow structure. Therefore, the mass of the rotating shaft 32 can be reduced, the material consumption is reduced, and the cost is reduced; in addition, the friction force between the rotating body 321 and the shaft sleeve 31 is reduced, so that the convenience of the rotation of the fan head 20 can be improved.

Further, as shown in fig. 7, the connection protrusion 322 has a ring shape. Specifically, the inner ring of the connection protrusion 322 is connected to the rotating body 321. In this way, the connection strength between the connection protrusion 322 and the rotating body 321 can be enhanced, and thus the structural strength of the rotating shaft 32 can be enhanced.

Further, as shown in fig. 6 and 7, the connection protrusion 322 is disposed near one end of the rotating body 321; in this embodiment, the connection protrusion 322 is provided at an end of the rotating body 321. Thus, the structure of the connecting portion of the support arm 11 and the connecting projection 322 can be simplified, so that the assembling process can be simplified and the assembling efficiency can be improved.

Further, as shown in fig. 6 and 7, the connection protrusion 322 has a plate shape. In this way, by providing the connection protrusion 322 in a plate shape, not only the structural strength of the connection protrusion 322 can be ensured, but also the structure of the connection protrusion 322 and the rotation shaft 32 can be simplified, and the manufacturing is facilitated.

Further, as shown in fig. 5 to 7, the connecting protrusion 322 protrudes from the outer circumferential surface of the boss 31. Specifically, the connecting protrusion 322 protrudes from the outer circumferential surface of the sleeve 31 in the radial direction of the rotation shaft 32. Therefore, the interference of the shaft sleeve 31 on the connection between the connection convex part 322 and the support arm 11 can be avoided, the influence of the shaft sleeve 31 on the installation of the rotating shaft 32 can be reduced, the assembling difficulty of the rotating shaft 32 can be reduced, and the assembling efficiency can be improved.

Further, as shown in fig. 1-3, 10 and 11, the upper end of the supporting arm 11 is provided with a connecting base plate 111 disposed opposite to the end of the rotating shaft 32, and a surrounding plate 112 extending toward the direction close to the fan head 20, a mounting groove 113 is defined between the surrounding plate 112 and the connecting base plate 111, and the rotating component 30 is mounted in the mounting groove 113. As such, by providing the mounting groove 113 at the upper end of the support arm 11 to mount the rotating assembly 30, it is possible to facilitate not only hiding the rotating assembly 30 but also protecting the rotating assembly 30.

Further, as shown in FIGS. 1-3, and 10 and 11, the shroud 112 is provided in a semi-annular configuration. In this manner, mounting notches may be formed to facilitate assembly of the rotating assembly 30.

It should be noted that the "semi-ring structure" is not a half ring in a strict sense, and more or less than half of the ring structure is also the "semi-ring structure".

Specifically, the shroud 112 is disposed below the pivot assembly 30. As such, the shroud 112 may also be used to support the rotating assembly 30.

Further, as shown in fig. 1-3, 10 and 11, a limit protrusion 1121 spaced apart from the connection substrate 111 is protruded from the inner side of the surrounding plate 112, and the connection protrusion 322 of the rotating shaft 32 is clamped between the limit protrusion 1121 and the connection substrate 111. In this way, it is possible to achieve preliminary positioning and limiting of the counter shaft 32 and the support arm 11 for subsequent assembly.

Specifically, the limit protrusion 1121 extends along the circumferential direction of the rotating shaft 32; in this way, the connection strength between the stopper projection 1121 and the shroud 112 can be improved.

Alternatively, as shown in fig. 1 to 3, and 10 and 11, the limit projection 1121 is provided in a plate shape; so as to simplify the structure of the position-limiting protrusion 1121 and reduce the manufacturing difficulty.

Specifically, the limit protrusion 1121 is disposed below the rotating member 30. In this manner, the mounting of the rotating assembly 30 may be facilitated.

Further, as shown in fig. 1-3, 10 and 11, the first fastening structure includes a receptacle 1122 formed in the surrounding plate 112, and a tab 3221 protruding from the connecting protrusion 322 of the rotating shaft 32, wherein the tab 3221 is inserted into the receptacle 1122. In this way, the primary alignment and positioning of the counter shaft 32 and the support arm 11 can be achieved for subsequent assembly.

Specifically, as shown in fig. 1-3, 10 and 11, the receptacle 1122 is disposed below the rotating assembly 30. In this manner, the mounting of the rotating assembly 30 may be facilitated.

Specifically, the inserting button 3221 is disposed at an edge of the connecting protrusion 322 and below the rotating body.

Further, as shown in fig. 1-3, 10 and 11, the insertion hole 1122 is provided between the stopper protrusion 1121 and the connection substrate 111. In this way, during assembly, after the tab 3221 is inserted into the insertion hole 1122, the connection protrusion 322 is naturally clamped between the position-limiting protrusion 1121 and the connection substrate 111, so that one-step alignment installation can be realized, thereby simplifying the assembly process between the rotating shaft 32 and the support arm 11 and improving the assembly efficiency.

Further, as shown in fig. 1 to 3, and fig. 10 and 11, the first screwing structure includes a first locking screw 41 (which may be a screw, a bolt, or the like), and the first locking screw 41 connects the connecting protrusion 322 of the rotating shaft 32 and the connecting substrate 111. In this way, further connection and fixation of the rotating shaft 32 and the support arm 11 can be realized, so as to improve the connection stability between the rotating shaft 32 and the support arm 11.

Specifically, as shown in fig. 1 to 3, and 10 and 11, a first connection hole 1111 is formed on the connection substrate 111, a second connection hole 3222 is formed on the connection protrusion 322, at least one of the first connection hole 1111 and the second connection hole 3222 is configured as a threaded hole, and the first locking screw 41 is installed in the first connection hole 1111 and the second connection hole 3222 to connect the connection protrusion 322 with the connection substrate 111. In this embodiment, the first connection hole 1111 and the second connection hole 3222 are both provided as threaded holes.

Optionally, the head of the first locking screw 41 is disposed on a side of the connection substrate 111 away from the rotating assembly 30. In this way, the assembly space can be increased to facilitate the installation of the first locking screw 41.

Further, as shown in fig. 1 to 3, and 10 and 11, the first locking screws 41 are provided in two; the two first locking screws 41 are respectively installed at both sides of the buckle 3221. Thus, a three-point fixing structure can be formed, so that not only can the coupling strength between the rotating shaft 32 and the support arm 11 be ensured, but also the number of the first locking screws 41 can be reduced, so that the assembly time can be reduced, and the assembly efficiency can be improved.

Of course, the number of the first locking screws 41 may be set to one, or three, or other numbers.

Specifically, the first locking screw 41 is disposed above the buckle 3221.

Further, as shown in fig. 1-3, 10 and 11, a clamping protrusion 211 is disposed on a surface of the housing 21, the second fastening structure includes a rotation groove 2111 disposed on the clamping protrusion 211 and a rotation protrusion 311 protruding from an outer peripheral surface of the shaft sleeve 31, and the rotation protrusion 311 is fastened in the rotation groove 2111. Specifically, the spiral groove 2111 has an inlet through which the spiral protrusion 311 is rotatably caught in the spiral groove 2111.

Therefore, the shaft sleeve 31 and the shell 21 can be initially aligned, positioned and fixed, so that subsequent assembly is facilitated. Meanwhile, the connection strength between the shaft sleeve 31 and the housing 21 can be facilitated by the structure of the rotary protrusion 311-the rotary groove 2111 connecting the shaft sleeve 31 and the housing 21.

Specifically, a mounting area (not shown) is disposed on a side portion (left side portion or right side portion) of the housing 21, and the snap-fit protrusion 211 is disposed in the mounting area.

Specifically, the rotary protrusion 311 is disposed near an end of the sleeve 31. Optionally, the rotary protrusion 311 is provided at an end of the sleeve 31. Thus, the structure of the connection part of the fan head 20 and the shaft sleeve 31 can be simplified, thereby simplifying the assembly process and improving the assembly efficiency.

Further, as shown in fig. 1-3, 8, and 9, the locking protrusion 211 includes a supporting protrusion 2112 protruding from the surface of the housing 21, and a locking protrusion 2113 protruding from the supporting protrusion 2112, and the locking protrusion 2113, the supporting protrusion 2112, and the surface of the housing 21 together define a spiral groove 2111. Thus, the spiral groove 2111 can be formed based on the housing 21, so that the alignment process of the spiral protrusion 311 and the spiral groove 2111 can be simplified, the design process can be simplified, and the design difficulty can be reduced.

Specifically, the locking protrusion 2113 is provided at the end of the supporting protrusion 2112.

Further, as shown in fig. 1 to 3, 8 and 9, the locking protrusion 211 further includes a reinforcing protrusion 2114 protruding from the surface of the housing 21, and the reinforcing protrusion 2114 connects the locking protrusion 2113 and the housing 21. Thus, the structural strength of the catching protrusion 211 may be enhanced, and thus, the coupling stability between the rotation protrusion 311 and the rotation groove 2111 may be enhanced.

Specifically, the reinforcing protrusion 2114 is also laterally connected to the supporting protrusion 2112 to further enhance the structural strength of the snap protrusion 211.

Specifically, the reinforcing protrusion 2114 is disposed opposite to the entrance of the spiral groove 2111; in this manner, the reinforcing protrusion 2114 also serves to position the screw-fitting of the screw protrusion 311 and the screw groove 2111.

Of course, the spiral groove 2111 can be formed by other methods, such as recessing the inner side of the snap-in protrusion 211 to form the spiral protrusion 311, and so on.

Further, as shown in fig. 1 to 3, 8, and 9, the rotary protrusion 311 is provided in plurality at intervals in the circumferential direction of the sleeve 31; correspondingly, the clamping convex parts 211 are also provided with a plurality of clamping convex parts, and each clamping convex part 211 is provided with a rotary groove 2111. In this manner, the coupling stability between the boss 31 and the housing 21 can be enhanced.

Specifically, the number of the rotary protrusions 311 is two, and correspondingly, the number of the clamping protrusions 211 is also two.

It is understood that if the number of the rotation protrusions 311 is set to one, the primary positioning between the sleeve 31 and the housing 21 may be unstable; if the number of the rotary protrusions 311 is three or more, more assembly space is occupied, and the assembly difficulty is increased; the complexity of the structure is also increased.

By setting the number of the rotary protrusions 311 to two, not only can the primary positioning stability between the shaft sleeve 31 and the housing 21 be ensured, but also a sufficient assembly space can be ensured, thereby reducing the assembly difficulty.

Optionally, the two rotary protrusions 311 are oppositely arranged to ensure the force uniformity between the shaft sleeve 31 and the housing 21.

Further, as shown in fig. 1-3, 8, and 9, the second snap structure further includes a gear protrusion 212 protruding from the surface of the housing 21, and the sleeve wall of the shaft sleeve 31 is disposed between the gear protrusion 212 and the snap protrusion 211. Therefore, during assembly, the shaft sleeve 31 can be guided and limited so as to simplify the assembly process; after the assembly is completed, the gear protrusion 212 may further limit the position of the shaft sleeve 31, so as to improve the installation stability between the shaft sleeve 31 and the housing 21.

Specifically, as shown in fig. 1 to 3, 8 and 9, the gear projection 212 extends in the circumferential direction of the shaft sleeve 31; in this way, the coupling strength between the shift boss 212 and the housing 21 can be improved, and the mounting stability between the boss 31 and the housing 21 can be further improved.

Further, as shown in fig. 1 to 3, 8, and 9, the gear protrusion 212 is provided in plurality at intervals in the circumferential direction of the boss 31. Therefore, the accuracy and the stability of limiting the shaft sleeve 31 can be improved.

In the present embodiment, there are two gear protrusions 212; thus, the forming space can be provided for other structures. Optionally, the two gear protrusions 212 are disposed opposite to each other, so that the force uniformity between the shaft sleeve 31 and the housing 21 can be further improved.

Of course, in other embodiments, the gear protrusion 212 may be configured as a ring.

Further, as shown in fig. 1-3, 8, and 9, the second screwing structure includes a second locking screw 42 (which may be a screw, a bolt, or the like), a first screwing position disposed on the casing 21 of the fan head 20, and a second screwing position disposed on the shaft sleeve 31, and the second locking screw 42 connects the first screwing position and the second screwing position. In this manner, further coupling and fixing of the boss 31 and the housing 21 can be achieved to improve the coupling stability between the boss 31 and the housing 21.

Further, as shown in fig. 1 to 3, 8 and 9, the first screw fastening position includes a connection through hole 213 penetrating through a wall of the housing 21, and the second locking screw 42 passes through the connection through hole 213 to be connected to the second screw fastening position, specifically, the second locking screw 42 is located in the housing 21. In this manner, the assembly space can be increased to facilitate installation of the second locking screw 42.

In the present embodiment, the housing 21 is provided in a cylindrical structure with both ends open.

Alternatively, the connection via 213 may be configured as a threaded hole or a non-threaded hole. In this embodiment, the connection via 213 is provided as a screw hole to improve connection strength.

Optionally, as shown in fig. 1-3, 8, and 9, the first screw joint further includes a first screw post 214 protruding from the surface of the housing 21, and the connection via 213 is disposed on the screw post. In this way, the structural strength of the connection via hole 213 may be enhanced, and thus the connection stability between the sleeve 31 and the housing 21 may be improved.

Alternatively, as shown in fig. 6, the second screw connection position includes a screw connection hole 312 opened on the shaft sleeve 31, and the second locking screw 42 is screwed to the screw connection hole 312. Thus, the second locking screw 42 connects the first screw connection position and the second screw connection position.

Further, as shown in fig. 6, the second screw joint further includes a second screw hole pillar 313 disposed on the shaft sleeve 31, and the screw joint hole 312 is disposed on the second screw hole pillar 313. As such, the structural strength of the screw coupling hole 312 may be enhanced to improve coupling stability between the sleeve 31 and the housing 21.

Specifically, the second screw hole stud 313 is formed on the sleeve wall of the sleeve 31.

Further, as shown in fig. 6, the second screwing site is provided in plurality at intervals in the circumferential direction of the sleeve 31, and correspondingly, the first screwing site and the second locking screw 42 are also provided in plurality. In this way, the stability of the connection between the boss 31 and the housing 21 can be improved.

In this embodiment, as shown in fig. 6, two second screwing positions are provided, and the two second screwing positions and the two rotary protrusions 311 are sequentially distributed at intervals. Thus, a four-point fixing structure can be formed, so that not only can the connection strength between the shaft sleeve 31 and the housing 21 be ensured, but also the number of the second locking screws 42 can be reduced, thereby reducing the assembly time and improving the assembly efficiency.

Optionally, the two second screwing positions are oppositely arranged. Thus, the uniformity of the force applied between the sleeve 31 and the housing 21 can be further improved.

Further, as shown in fig. 1-3, 8, and 9, the housing 21 further includes an annular connecting rib 215, and the annular connecting rib 215 connects the clamping protrusion 211 and the first threaded stud 214. Thus, the structural strength of the clamping protrusion 211 and the first screw hole pillar 214 can be improved.

Further, the wind wheels of the fan head 20 include a first axial flow wind wheel and a second axial flow wind wheel which are adjacently arranged along the axial direction, and the air supply direction of the first axial flow wind wheel is the same as the air supply direction of the second axial flow wind wheel. So, through making fan head 20 includes along the adjacent first axial flow wind wheel and the second axial flow wind wheel that sets up of axial, can increase fan head 20's air supply volume, air supply speed and air supply distance to can effectively improve the air supply travelling comfort in the rooms that space ranges is big such as living room.

It is understood that "first axial wind rotor and second axial wind rotor axially adjacent" may be understood as both the second axial wind rotor being disposed adjacent to the first axial wind rotor in the axial direction of the first axial wind rotor and the first axial wind rotor being disposed adjacent to the second axial wind rotor in the axial direction of the second axial wind rotor, and the same applies to both.

In this embodiment, the first axial wind wheel and the second axial wind wheel may be coaxially arranged. Therefore, the noise can be reduced and the air supply quality can be improved. It should be noted that the "coaxial" in the present invention is not coaxial in a strict sense, and errors are allowed to exist in an actual production (assembly) process, which does not violate the inventive concept of the present invention, and does not significantly affect the technical effect of the present invention; that is, the present invention allows for assembly errors between the rotating shaft 32 of the first axial flow rotor and the rotating shaft 32 of the second axial flow rotor.

In particular embodiments, one may: the bending direction of the fan blades of the first axial flow wind wheel is opposite to that of the fan blades of the second axial flow wind wheel, and the rotating direction of the first axial flow wind wheel is opposite to that of the second axial flow wind wheel, so that the first axial flow wind wheel and the second axial flow wind wheel are arranged in a contrarotation mode, and the air supply direction of the first axial flow wind wheel is the same as that of the second axial flow wind wheel. Thus, the first axial flow wind wheel and the second axial flow wind wheel are arranged in a contra-rotating manner, so that the power of the motor of the fan 100 can be reduced. Moreover, the air supply pressure of the air conditioner is high and the air supply distance is long through double-wind-wheel pressurization. In addition, to rotating the setting, also can the noise reduction, improve user's comfort level.

It is also possible to make: the bending direction of the fan blades of the first axial flow wind wheel is the same as that of the fan blades of the second axial flow wind wheel, and the rotating direction of the first axial flow wind wheel is the same as that of the second axial flow wind wheel. Therefore, the air supply direction of the first axial flow wind wheel is the same as that of the second axial flow wind wheel.

In particular embodiments, one may: the rotating speed of the first axial flow wind wheel is equal to that of the second axial flow wind wheel. In this way, the fan head 20 can have a strong direct wind mode, and the blowing distance of the fan head 20 is farther in the strong direct wind mode.

Alternatively, it is also possible to make: the rotating speed of the first axial flow wind wheel is greater than that of the second axial flow wind wheel, or the rotating speed of the first axial flow wind wheel is smaller than that of the second axial flow wind wheel. In this way, the fan head 20 can have a diffuse air mode in which the air blowing range of the fan head 20 is wider.

Specifically, as shown in fig. 1 to 3, two rotating assemblies 30 are provided, and the two rotating assemblies 30 are respectively connected to the left and right sides of the housing 21 and the two support arms 11.

In this embodiment, the supporting base 10 includes a base (not shown) and a supporting frame (not shown) mounted on the base, and the supporting arm 11 is disposed at an upper end of the supporting frame.

Specifically, as shown in fig. 5, the sleeve 31 is provided with a stepped structure so as to be engaged with the rotating shaft 32, and the like.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A fan, comprising:

2. The fan as claimed in claim 1, wherein the rotation shaft includes a rotation body and a connection protrusion protruding from an outer circumferential surface of the rotation body, the rotation body is rotatably installed in the housing hole of the bushing, and the connection protrusion is connected to the fan head, or the connection protrusion is connected to the support arm.

3. The fan as claimed in claim 2, wherein the coupling protrusion is ring-shaped; and/or the presence of a gas in the gas,

4. The fan as claimed in claim 1, wherein the upper end of the supporting arm is provided with a connecting base plate disposed opposite to the end of the rotating shaft, and a surrounding plate extending in a direction close to the fan head, the surrounding plate and the connecting base plate form a mounting groove, and the rotating assembly is mounted in the mounting groove.

5. The fan as claimed in claim 4, wherein the rotation shaft is connected to the support arm;

the coaming is arranged into a semi-annular structure.

6. The fan as claimed in claim 4, wherein the rotation shaft is connected to the support arm;

7. The fan as claimed in claim 4, wherein the rotation shaft is connected to the support arm;

8. The fan as claimed in claim 7, wherein the first screw coupling structure includes a first locking screw which connects the coupling protrusion of the rotation shaft with the coupling base plate; the number of the first locking screws is two, and the two first locking screws are respectively arranged on two sides of the inserting buckle; and/or the presence of a gas in the gas,

9. The fan as claimed in any one of claims 1 to 8, wherein said boss is connected to said fan head;

10. The fan as claimed in claim 9, wherein the locking protrusion includes a supporting protrusion protruding from the surface of the housing, and a locking protrusion protruding laterally from the supporting protrusion, and the locking protrusion, the supporting protrusion and the surface of the housing define the spiral groove together.

11. The fan as claimed in claim 10, wherein the locking protrusion further comprises a reinforcing protrusion protruding from the surface of the housing, and the reinforcing protrusion connects the locking protrusion and the housing.

12. The fan as claimed in claim 9, wherein the rotary protrusion is provided in plurality at intervals in a circumferential direction of the boss.

13. The fan as claimed in claim 9, wherein the second locking structure further comprises a convex portion protruding from the surface of the housing, and the sleeve wall of the sleeve is disposed between the convex portion and the locking portion.

14. The fan as claimed in claim 13, wherein the gear protrusion extends in a circumferential direction of the boss; and/or the presence of a gas in the gas,

15. The fan as claimed in any one of claims 1 to 8, wherein the second screw connection structure comprises a second locking screw, a first screw connection position provided on the casing of the fan head, and a second screw connection position provided on the shaft sleeve, and the second locking screw connects the first screw connection position and the second screw connection position.

16. The fan as claimed in claim 15, wherein the first screw coupling portion includes a first screw hole post protruded on the surface of the housing; and/or the presence of a gas in the gas,

17. The fan as claimed in claim 15, wherein the second screw coupling portions are provided in two at intervals in a circumferential direction of the boss, the boss is provided in two at the boss, and the two second screw coupling portions are sequentially spaced from the two bosses.

18. The fan according to any one of claims 1 to 8, wherein the fan head includes a first axial flow wind wheel and a second axial flow wind wheel which are adjacently arranged in an axial direction, and an air supply direction of the first axial flow wind wheel is the same as an air supply direction of the second axial flow wind wheel.

19. The fan of claim 18 wherein the first axial flow rotor has a rotational speed equal to the rotational speed of the second axial flow rotor; alternatively, the first and second electrodes may be,