EP3650704A1

EP3650704A1 - Fan head assembly and fan

Info

Publication number: EP3650704A1
Application number: EP17918928.7A
Authority: EP
Inventors: Yong Yu; Shiqiang CUI; Yongqiang Wu; Fei Peng; Wenjun Zhang; Xusheng Zhang; Wei Xu; Weiliang LIU; Fengxi YAN
Original assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2017-07-28
Filing date: 2017-09-28
Publication date: 2020-05-13
Anticipated expiration: 2037-09-28
Also published as: JP2020526706A; KR20200018660A; EP3650704A4; KR102341015B1; CN107237772B; WO2019019345A1; CN107237772A; EP3650704B1; JP6892178B2

Abstract

The present application is applicable to the field of household appliances, and discloses a fan head assembly and a fan. The fan head assembly includes an air outlet base; an air inlet base provided at one side of the air outlet base; and a rotation-swing mechanism, configured to drive the air outlet base to rotation-swing relative to the air inlet base. The rotation-swing mechanism includes a rotation-swing drive motor, mounted on the air inlet base; and a rotation-swing transmission pair, transmissively connecting the rotation-swing drive motor and the air outlet base. In the present application, the air outlet base is able to rotationally swing relative to the air inlet base, which breaks the conventional design idea that the air outlet base and the air inlet base in the existing fan are relatively fixed. Since the air outlet base is three-dimensionally swinging relative to the air inlet base, the product may works in a cool way, which solves the problem of serious homogeneity and no different selling points of existing fan products. At the same time, it effectively expands the air supply area and enabless the rotational output of the wind direction, so that the output wind feeling is softer and more natural.

Description

TECHNICAL FIELD

The present application relates to the field of household appliances, and in particular, to a fan head assembly and a fan including the same.

BACKGROUND

In the prior art, there are roughly the following ways of oscillation of a fan: one is automatic left and right oscillation + manual up and down oscillation; one is automatic up and down oscillation + manual left and right oscillation; and one is automatic left and right oscillation + automatic up and down oscillation. These existing ways of oscillation of the fans have the following disadvantages in specific applications:

1) The air outlet base and the air inlet base of the fan are relatively fixed, the air supply area is limited, and the product is homogeneous. There is no differentiated selling points, which is not beneficial to the promotion and sales of the product.
2) Each kind of oscillation is simply combined by single planar oscillations, and spatial three-dimensional oscillation is not really achieved. The product is highly homogeneous and has no differentiated selling points, which is not beneficial to the promotion and sales of the product. Further, since the moving trajectory of a single oscillation is a linear reciprocating motion, stopping of oscillation is prone to occur at the reversing positions.
3) Each group of single planar oscillation requires a motor to drive a group of transmission mechanisms, such as a synchronous motor to drive a four-link mechanism, or a stepper motor/reversible motor to drive a gear meshing mechanism. In this way, the structure is relatively complicated, and the combined three-dimensional oscillation has high technical difficulty, thus the production is difficult, and the cost required is high.

SUMMARY

The first object of the present application is to provide a fan head assembly, which aims to solve the technical problem that the air outlet base and the air inlet base of the fan are relatively fixed, so that the product is homogeneous, and there is no differentiated selling points of the product.
In order to achieve the above object, the solution provided by the present application is: a fan head assembly includes an air outlet base; an air inlet base provided at one side of the air outlet base; and a rotation-swing mechanism, configured to drive the air outlet base to rotationally swing relative to the air inlet base. The rotation-swing mechanism includes a rotation-swing drive motor, mounted on the air inlet base; and a rotation-swing transmission counterpart, transmissively connecting the rotation-swing drive motor and the air outlet base.
Optionally, the air outlet base includes a first spherical surface; and the air inlet base includes a second spherical surface in clearance fit with the first spherical surface; where: a spherical center of the first spherical surface is configured to coincide with a spherical center of the second spherical surface; and the first spherical surface is configured to cover outside of the second spherical surface, or the second spherical surface is configured to cover outside of the first spherical surface.
Optionally, a clearance between the first spherical surface and the second spherical surface is configured to be no less than 1mm and no more than 12mm.
Optionally, the rotation-swing drive motor includes: an output shaft. The rotation-swing transmission counterpart includes: a cam, fit on the output shaft; a connecting sleeve, sleeved on the cam; a connecting rod, connected with the connecting sleeve; and a universal ball hinge structure, sleeved on the connecting rod and connected with the air inlet base. The air outlet base is configured to be connected with the connecting rod; and the spherical center of the first spherical surface, the spherical center of the second spherical surface, and a spherical center of the universal ball hinge structure are configured to coincide with each other.
Optionally, the cam is configured to be an eccentric wheel. An included angle A between a central axis of the connecting rod and a central axis of the output shaft is configured to be more than 0 degree and no more than 30 degrees.
Optionally, A=5°±3°.
Optionally, the universal ball hinge structure includes: a universal ball sleeve, connected with the air inlet base; a universal ball, sleeved on the connecting rod and penetrating through the universal ball sleeve; and a ball fixing cover, sleeved on one end of the universal ball and connected with the universal ball sleeve.
Optionally, the connecting rod includes: a first rod body; and a second rod body, having an outer diameter smaller than an outer diameter of the first rod body; where: an end of the first rod body away from the second rod body is configured to be sleeved on the connecting sleeve; the universal ball hinge structure is configured to be sleeved on the second rod body; and the air outlet base is configured to be connected to the second rod body; and/or,
the connecting rod is configured to be a hollow structure.
Optionally, the air inlet base includes: an air inlet mesh cover, the second spherical surface being configured to be provided on the air inlet mesh cover; and a mounting bracket, mounted inside of the air inlet mesh cover, one end of the mounting bracket being connected with the rotation-swing drive motor, the other end of the mounting bracket being connected with the universal ball hinge structure.
Optionally, the air inlet mesh cover includes: a mesh cover body; a middle frame, mounted at one end of the mesh cover body, the second spherical surface being configured to be provided on the middle frame; and a sleeve, protruded inside of the mesh cover body, the mounting bracket and the rotation-swing drive motor being both configured to be housed inside of the sleeve.
Optionally, the air inlet base further includes: a plastic connector, the mounting bracket being connected to the sleeve through the plastic connector; and a damping pad, including: a first damping portion, provided between the mounting bracket and the sleeve; a second damping portion, provided between the mounting bracket and the universal ball hinge structure; and a third damping portion, extending to be abutted against an inner side wall of the sleeve.
Optionally, the air outlet base includes: a fan cover, connected with the rotation-swing transmission pair; and a fan blade, provided inside of the fan cover. The fan head assembly further includes: a wind-driven motor, connected with the fan blade and configured to drive the fan blade to rotate; where the first motor includes: a stator, configured to be static relative to the fan cover; and a rotor, rotatably connected with the stator and statically connected with the fan blade relatively.
Optionally, the drive motor for air output is configured to be provided inside of the fan cover, and the stator is configured to be connected with the fan cover and/or the rotation-swing transmission pair; or,
the drive motor for air output is configured to be provided outside of the fan cover, and the stator is configured to be connected with the rotation-swing transmission pair.
Optionally, the fan cover includes: a main cover; a front mesh, fit at one end of the main cover; and a rear mesh, fit at the other end of the main cover and connected to the rotation-swing mechanism.
The second object of the present application is to provide a fan including the above-mentioned fan head assembly and a base assembly connected with the fan head assembly, and the air inlet base is mounted on the base assembly.
Optionally, the base assembly includes: a base body; and an oscillation mechanism, mounted on the base body and configured to drive the fan head assembly to rotate reciprocally, the air inlet base being connected to the oscillation mechanism.
Optionally, the fan is configured to be a floor fan, a table fan, a pedestal fan, or a wall fan.
The present application provides a fan head assembly and a fan, a rotation-swing mechanism is provided to the fan head assembly, so as to drive an air outlet base to perform a rotation-swing motion. Specifically, a rotation-swing drive motor is mounted on the air inlet base to provide power, and a rotation-swing transmission counterpart transmissively connects the rotation-swing drive motor and the air outlet base. In this way, after the rotation-swing drive motor is started, the rotation-swing transmission counterpart may convert the power output by the rotation-swing drive motor into a rotation-swing motion and drive the air out base to rotation-swing together, so that the air outlet base may rotationally swing relative to the air inlet base. As a result, the conventional design idea that the air outlet base and the air inlet base in the existing fan are relatively fixed may be broken. Since the air outlet base will be three-dimensionally swingingrelative to the air inlet base, the product may works in a cool way, which solves the problem of serious homogeneity and no different selling points of existing fan products, and it is beneficial to the promotion and sales of the product. In addition, since the air outlet base is driven by the rotation-swing mechanism to perform a three-dimensional swing motion combined with rotation, whichmeans, the air outlet base may be driven by the same power mechanism to achieve a combination of two ways of oscillation, so that spatial three-dimensional oscillation of the air outlet base may beachieved, it wouldeffectively expand the air supply area and enables the rotational output of the wind direction, and the output wind may give a softer and more natural feeling. Further, since the rotation-swing motion trajectory of the air outlet base is a three-dimensional continuous circumferential closed trajectory, the problem of stopping at the reversing positions during the linear reciprocating motion of the existing fan in a single plane may be prevented. Compared with the existing fan with a conventional combination of automatic left and right oscillation and automatic up and down oscillation, it has lower cost and more reliable movement.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

In order to explain the technical solutions in the embodiments of the present application or the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced as below. Obviously, the drawings in the following description are merely some embodiments of the present application. For those with ordinary skill in the art, other drawings can be obtained based on the structure shown in these drawings without creative labor.

FIG. 1 is a schematic assembly sectional view of a fan head assembly according to an embodiment of the present application;
FIG. 2 is a schematic exploded perspective view of a rotation-swing transmission counterpart according to an embodiment of the present application;
FIG. 3 is a schematic exploded perspective view of an air outlet base, a wind-driven motor, and a connecting bracket according to an embodiment of the present application;
FIG. 4 is a schematic structural view of the fan head assembly according to an embodiment of the present application;
FIG. 5 is a schematic view of a rotation-swing motion principle of the fan head assembly according to an embodiment of the present application; and
FIG. 6 is a schematic assembly sectional view of a fan according to an embodiment of the present application.

Description of reference numerals

[Table 1]

Reference numeral	Name	Reference numeral	Name
100	Fan head assembly	1	Air outlet base
11	Fan cover	110	First spherical surface
111	Main cover	112	Front mesh
113	Rear mesh	12	Fan blade
2	Air outlet base	21	Air inlet mesh cover
210	Second spherical surface	211	Mesh cover body
212	Middle frame	213	Sleeve
22	Mounting bracket	23	Plastic connector
24	Damping pad	3	Rotation-Swing mechanism
31	Rotation-Swing drive motor	311	Output shaft
3110	Central axis of output shaft	32	Rotation-Swing transmission counterpart
321	Cam	322	Connecting sleeve
323	Connecting rod	3230	Central axis of connecting rod
3231	First rod body	3232	Second rod body
324	Universal ball hinge structure	3240	Spherical center of universal ball hinge structure
3241	Universal ball sleeve	3242	Universal ball
3243	Ball fixing cover	4	Drive motor for air output
41	Stator	42	Rotor
5	Connecting bracket	200	Base assembly
201	Base body	202	Oscillation mechanism

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative labor are within the scope of the present application.
It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present application are only used to explain the relative position relation, motion, etc. of each component under a certain posture (as shown in the drawing). If the specific posture changes, the directional indication also changes accordingly.
It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a centered element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present concurrently.
In addition, the descriptions of "first", "second", and the like in the present application are used for descriptive purposes only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions of the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist, nor is it within the scope of protection required by the present application.
As shown in FIGS. 1 to 6, the embodiment of the present application provides a fan head assembly 100 which includes an air outlet base 1; an air inlet base 2 provided at one side of the air outlet base 1; and a rotation-rotation-swingrotation-swing mechanism 3, configured to drive the air outlet base 1 to rotationally swing relative to the air inlet base 2. The rotation-swing mechanism 3 includes a rotation-swing drive motor 31, mounted on the air inlet base 2; and a rotation-swing transmission counterpart 32, transmissively connecting the rotation-swing drive motor 31 and the air outlet base 1.
Specifically, the air outlet base 1 is the air outlet side of the fan head assembly 100, and the air inlet base 2 is the air inlet side of the fan head assembly 100. In specific applications, when the fan is running, outside air enters from the air inlet base 2 into the fan head assembly 100 and is discharged outside of head assembly 100 through the air outlet base 1. The rotation-swing drive motor 31 is a power output component of the rotation-swing mechanism 3. The rotation-swing transmission counterpart 32 is used to convert the power output from the rotation-swing drive motor 31 into a rotation-swing motion and transmit it to the air outlet base 1, so as to drive the air outlet base 1 to perform a rotation-swing motion. The rotation-swing motion is a spatial three-dimensional motion, which is specifically a combined motion of rotation and oscillation, and its motion trajectory is a three-dimensional continuous circumferential closed trajectory. According to the fan head assembly 100 provided in the embodiment of the present application, driven by the rotation-swing mechanism 3, the air outlet base 1 may rotation-swing relative to the air inlet base 2. As a result, the conventional design idea that the air outlet base 1 and the air inlet base 2 in the existing fan are relatively fixed may be broken. Since the air outlet base 1 will be three-dimensionally -swinging relative to the air inlet base 2, the product may works in a cool way, which solves the problem of serious homogeneity and no different selling points of existing fan products, and is beneficial to the promotion and sales of the product. In addition, since the air outlet base 1 is driven by the rotation-swing mechanism 3 to perform a three-dimensional swing motion of a combination of rotation and oscillation, that is, the air outlet base 1 may be driven by the same power mechanism to achieve a combination of two ways of oscillation, spatial three-dimensional oscillation of the air outlet base 1 may be realized, which may effectively expand the air supply area and realize the rotation output of the wind direction, and the output wind feeling may be more soft and natural. Further, since the rotation-swing motion trajectory of the air outlet base 1 is a three-dimensional continuous circumferential closed trajectory, the problem of stopping at the reversing position during the linear reciprocating motion of the fan in a single plane may be prevented, and the movement of the product may be more reliable.
Preferably, referring to FIG. 1, FIG. 4, and FIG. 6, the air outlet base 1 includes a first spherical surface 110; and the air inlet base 2 includes a second spherical surface 210 in clearance fit with the first spherical surface 110; where: a spherical center of the first spherical surface 110 is configured to coincide with a spherical center of the second spherical surface 210; and the second spherical surface 210 is configured to cover outside of the first spherical surface 110. Here, the second spherical surface 210 covers outside of the first spherical surface 110, so that the air outlet base 1 and the air inlet base 2 may be well connected together. In this way, it is beneficial to prevent dust or debris from entering the rotation-swing mechanism 3, and improve the appearance of the product. Since the first spherical surface 110 and the second spherical surface 210 are concentrically arranged, and the first spherical surface 110 is in clearance fit with the second spherical surface 210, the air inlet base 2 may not interfere with the three-dimensional rotation-swing motion of the air outlet base 1, which fully guarantees the reliability of the product operation. At the same time, it may ensure that the second spherical surface 210 always covers outside of the first spherical surface 110 when the air outlet base 1 is running, so that it is prone to ensure that the operation of the product meets the requirements of safety testing. Certainly, as an alternative solution, the first spherical surface 110 may also be set to cover outside of the second spherical surface 210. In this way, it is also beneficial to prevent dust or debris from entering the rotation-swing mechanism 3, thus improving the appearance of the product, and guaranteeing the reliability of the product operation.
Preferably, referring to FIG. 1, FIG. 4 and FIG. 6, a clearance L between the first spherical surface 110 and the second spherical surface 210 is configured to be no less than 1mm and no more than 12mm. Specifically, if the clearance L between the first spherical surface 110 and the second spherical surface 210 is designed to be too small, friction between the air outlet base 1 and the air inlet base 2 is prone to be caused during the rotation-swing motion of the air outlet base 1, thereby affecting the smoothness of the rotation-swing motion of the air outlet base 1. If the clearance L between the first spherical surface 110 and the second spherical surface 210 is designed to be too large, it will affect the aesthetics of the product, and it is not beneficial to ensure the dustproof and anti-debris effect of the product. Here, the clearance L between the first spherical surface 110 and the second spherical surface 210 is set to be no less than 1mm and no more than 12mm, which is not only beneficial to the smoothness of the rotation-swing motion of the air outlet base 1, but also to ensure the aesthetics of the product and the dustproof and anti-debris effects. The comprehensive performance is good, thereby meeting the needs of most applications. As a preferred implementation of this embodiment, the clearance L between the first spherical surface 110 and the second spherical surface 210 may be no less than 1mm and no more than 5mm.
Preferably, referring to FIG. 1, FIG. 2, FIG. 4, and FIG. 6, the rotation-swing drive motor 31 includes: an output shaft 311. The rotation-swing transmission counterpart 32 includes: a cam 321, fit on the output shaft 311; a connecting sleeve 322, sleeved on the cam 321; a connecting rod 323, connected with the connecting sleeve 322; and a universal ball hinge structure 324, sleeved on the connecting rod 323 and connected with the air inlet base 2. The air outlet base 1 is configured to be connected with the connecting rod 323; and the spherical center of the first spherical surface 110, the spherical center of the second spherical surface 210, and a spherical center 3240 of the universal ball hinge structure 324 are configured to coincide with each other. The cam 321 is mainly used to convert the rotary power output from the output shaft 311 into a rotation-swing motion. The connecting sleeve 322 is mainly used to realize the connection between the cam 321 and the connecting rod 323. The connecting rod 323 is mainly used to transmit the rotation-swing motion on the cam 321 to the air outlet base 1, so that the air outlet base 1 may perform a three-dimensional oscillation relative to the air inlet base 2. The universal ball hinge structure 324 is mainly used to provide a support point for the rotation-swing motion of the connecting rod 323, thereby fully guaranteeing the stability of the rotation-swing motion of the connecting rod 323 and the air outlet base 1. In addition, in this embodiment, the first spherical surface 110, the second spherical surface 210, and the universal ball hinge structure 324 are set to be concentric, which is beneficial to ensure that the second spherical surface 210 always covers outside of the first spherical surface 110 when the rotation-swing mechanism 3 drives the air outlet base 1 to rotate. The clearance L between the second spherical surface 210 and the first spherical surface 110 is always the same, so that the air inlet base 2 may not interfere with the three-dimensional rotation-swing motion of the air outlet base 1, which fully guarantees the reliability and safety of product operation.
Preferably, the cam 321 is an eccentric wheel. Driven by the cam 321, the connecting rod 323 and the air outlet base 1 may perform a three-dimensional conical motion relative to the output shaft 311 of the rotation-swing drive motor 31, so that three-dimensional oscillation of the air outlet base 1 may be achieved. Specifically, according to the fan head assembly 100 provided in this embodiment, driven by the rotation-swing drive motor 31, the rotation-swing transmission counterpart 32 may perform a three-dimensional conical motion around the output shaft 311 of the rotation-swing drive motor 31. Since the air outlet base 1 is connected with the rotation-swing transmission counterpart 32, the air outlet base 1 may perform a three-dimensional conical motion along with the rotation-swing transmission counterpart 32, so that the fan head body may perform external conical rotation relative to the fixed base. The blowing range of the fan may be expanded through this kind of simple three-dimentional motion, so that the small size fan may achieve the blowing effect of the large size fan. Certainly, as an alternative solution, the cam 321 may also adopt other shapes. For example, the cam 321 may be designed as an oval wheel or other irregular wheels. In specific applications, the shape of the cam 321 may be designed to make the air outlet base 1 achieve the effect of three-dimensional oscillation of different trajectories.
Specifically, referring to FIG. 1, FIG. 4, FIG. 5, and FIG. 6, an included angle A is between a central axis 3230 of the connecting rod 323 and a central axis 3110 of the output shaft 311, and A is preferred to be more than 0 degree and no more than 30 degrees. The included angle A is the swing angle of the output power of the rotation-swing mechanism 3. The larger the included angle A is, the larger the swing range of the air outlet base 1 is, and the larger the blowing range is, but the larger the sizes of the cam 321 and the connecting rod 323 are. Here, the included angle A is designed to be more than 0 degree and no more than 30 degrees, which may meet the requirements of the blowing range in most occasions, and the dimensions of the cam 321 and the connecting rod 323 may not be too large, which is beneficial to the miniaturization design of the product, and makes the design and manufacture of the product easier.
As a preferred implementation of this embodiment, A=5°±3°. Here, the included angle A is designed to be about 5 degrees, so that the sizes of the cam 321 and the connecting rod 323 are relatively moderate, which is beneficial to the miniaturization design of the product, and it makes the design and manufacture of the product easier.
Preferably, referring to FIG. 1, FIG. 2 and FIG. 6, the universal ball hinge structure 324 includes: a universal ball sleeve 3241, connected with the air inlet base 2; a universal ball 3242, sleeved on the connecting rod 323 and penetrating through the universal ball sleeve 3241; and a ball fixing cover 3243, sleeved on one end of the universal ball 3242 and connected with the universal ball sleeve 3241. The rotating spherical center of the universal ball 3242 is the spherical center 3240 of the universal ball hinge structure 324. The universal ball 3242 is closely matched with the connecting rod 323 and may move together with the connecting rod 323, that is, the universal ball 3242 and the connecting rod 323 are relatively stationary. The universal ball sleeve 3241 is used to support the universal ball 3242. The universal ball sleeve 3241 may radially limit the universal ball 3242, and also axially limit one end of the universal ball 3242. The ball fixing cover 3243 is mainly used to axially limit the other end of the universal ball 3242.
Specifically, a spherical arc-shaped inner wall is defined inside of the universal ball sleeve 3241. A plurality of spaced apart projections are protruded on the outer part of the universal ball 3242, and each projection respectively abuts against the spherical arc-shaped inner wall of the universal ball sleeve 3241. Here, the contact coordination between the universal ball 3242 and the universal ball sleeve 3241 may be realized through the plurality of projections, which is beneficial to reduce the resistance that the universal ball 3242 receives when it moves along with the connecting rod 323.
Preferably, referring to FIG. 1, FIG. 2 and FIG. 6, the connecting rod 323 includes: a first rod body 3231; and a second rod body 3232, having an outer diameter smaller than an outer diameter of the first rod body 3231. An end of the first rod body 3231 away from the second rod body 3232 is configured to be sleeved on the connecting sleeve 322. The universal ball hinge structure 324 is configured to be sleeved on the second rod body 3232. The air outlet base 1 is configured to be connected to the second rod body 3232. The universal ball 3242 is tightly sleeved on the second rod body 3232. Here, the outer diameter of the second rod body 3232 is designed to be smaller than the outer diameter of the first rod body 3231, which is beneficial to reduce the load of the rotation-swing drive motor 31 on the one hand and beneficial to the miniaturization design of the fan head assembly 100 on the other hand.
Preferably, the connecting rod 323 is a hollow structure, that is, the connecting rod 323 has a hollow inner hole defined therethrough along the axial direction. Here, the first rod body 3231 and the second rod body 3232 are both hollow structures, which is beneficial to reduce the weight of the connecting rod 323 and thus reducing the load of the rotation-swing drive motor 31.
Preferably, referring to FIG. 1, FIG. 2, FIG. 4, and FIG. 6, the air inlet base 2 includes: an air inlet mesh cover 21, the second spherical surface 210 being configured to be provided on the air inlet mesh cover 21; and a mounting bracket 22, mounted inside of the air inlet mesh cover 21, one end of the mounting bracket 22 being connected with the rotation-swing drive motor 31, the other end of the mounting bracket 22 being connected with the universal ball hinge structure 324. Here, the rotation-swing drive motor 31 and the universal ball hinge structure 324 are both mounted on the air inlet mesh cover 21 through the mounting bracket 22, so that assembly needs of different rotation-swing drive motors 31, universal ball hinge structures 324, and air inlet mesh covers 21 may be achieved by the flexible design of the mounting bracket 22, so that it is beneficial to simplify the installation structure of the rotation-swing drive motor 31, the universal ball hinge structure 324, and the air inlet mesh cover 21.
Preferably, the mounting bracket 22 includes a first arm connected with the rotation-swing drive motor 31; a second arm spaced apart from and opposite to the first arm; and two connecting arms, two ends of each connecting arm are respectively connected to one end of the first arm and one end of the second arm. The universal ball hinge structure 324 and the fixed base are both connected to the second arm. The part of the connecting rod 323 connected to the connecting sleeve 322, the cam 321, and the connecting sleeve 322 are all located between the first arm and the second arm, that is, the second rod body 3232, the cam 321, and the connecting sleeve 322 are all located between the first arm and the second arm. In this way, it is beneficial to improve the compactness of the product and beneficial to the miniaturization design of the product.
Preferably, the first arm and the second arm are arranged in parallel and spaced apart, and the connecting arms are vertically connected between the first arm and the second arm.
Preferably, referring to FIG. 1, FIG. 2, FIG. 4, and FIG. 6, the air inlet mesh cover 21 includes: a mesh cover body 211; a middle frame 212, mounted at one end of the mesh cover body 211, the second spherical surface 210 being configured to be provided on the middle frame 212; and a sleeve 213, protruded inside of the mesh cover body 211, the mounting bracket 22 and the rotation-swing drive motor 31 being both configured to be housed inside of the sleeve 213. The sleeve 213 is mainly used to prevent too many parts from being directly exposed, thereby improving aesthetics of the appearance of the product. Since the mesh cover body 211 needs to be provided with a grid structure for air circulation, a middle frame 212 without a grid structure is provided, and the second spherical surface 210 is formed on the middle frame 212. In this way, the difficulty of processing the second spherical surface 210 is small and the processing cost is low. Certainly, in specific applications, the second spherical surface 210 may also be provided on the mesh cover body 211 when the manufacturing conditions allowed.
Preferably, the sleeve 213 and the mesh cover body 211 are integrally formed. In this way, the accuracy of product dimensions is ensured, and the assembly process of the sleeve 213 and the mesh cover body 211 may be omitted.
Preferably, referring to FIG. 1 and FIG. 6, the air inlet base 2 further includes a plastic connector 23, and the mounting bracket 22 is connected to the sleeve 213 through the plastic connector 23. Here, the plastic connector 23 is used to connect the mounting bracket 22 and the sleeve 213, which is beneficial to prevent the mounting bracket 22 from being rigidly connected with the sleeve 213, thereby reducing vibration transmitted from the mounting bracket 22 to the sleeve 213.
Preferably, referring to FIG. 1 and FIG. 6, the air inlet base 2 further includes a damping pad 24. The damping pad 24 includes a first damping portion provided between the plastic connector 23 and the mounting bracket 22; a second damping portion provided between the mounting bracket 22 and the universal ball hinge structure 324; and a third damping portion extending to be abutted against an inner side wall of the sleeve 213. The first damping portion is mainly used to reduce the transmission of vibration between the mounting bracket 22 and the plastic connector 23. The second damping portion is mainly used to reduce the transmission of vibration between the mounting bracket 22 and the universal ball hinge structure 324. The third damping portion is mainly used to reduce the transmission of vibration between the sleeve 213 and the mounting bracket 22, and the sleeve 213 and the plastic connector 23. Here, the damping pad 24 is beneficial to reduce the vibration transmitted from the rotation-swing mechanism 3 to the base of the rear mesh 113, thereby improving the steadiness of product operation.
Preferably, referring to FIG. 1, FIG. 3, FIG. 4, and FIG. 6, the air outlet base 1 includes: a fan cover 11, connected with the rotation-swing transmission counterpart 32; and a one fan blade 12, provided inside of the fan cover 11. The fan head assembly 100 further includes: a drive motor for air output 4, connected with the fan blade 12 and configured to drive the fan blade 12 to rotate; where the first motor includes: a stator 41, configured to be static relative to the fan cover 11; and a rotor 42, rotatably connected with the stator 41 and statically connected with the fan blade 12 relatively. Specifically, the fan cover 11 is connected with the connecting rod 323 of the rotation-swing transmission counterpart 32. The relative stationary of the stator 41 and the fan cover 11 refers that when the fan is operating, there will be no relative movement between the stator 41 and the fan cover 11. The relative stationary of the rotor 42 and the fan blades 12 refers that when the fan is operating, there will be no relative movement between the rotor 42 and the fan blades 12. In order to achieve relative stationary of the stator 41 and the fan cover 11, in specific applications, one of the following two arrangements may be adopted: the first arrangement is that the stator 41 and the fan cover 11 are assembled and connected; the second arrangement is that the stator 41 has no assembly and connection relationship with the fan cover 11, the stator 41 and the fan cover 11 are respectively connected with the rotation-swing transmission counterpart 32, so that the stator 41 may be connected indirectly with the fan cover 11 through the rotation-swing transmission counterpart 32. In this embodiment, since the fan cover 11 is relatively static with the stator 41, the rotor 42 and the stator 41 are connected, and the rotor 42 and the fan blades 12 are connected, the rotation-swing mechanism 3 is able to simultaneously drive the fan cover 11, the fan blades 12, and the drive motor for air output 4 to perform the rotation-swing motion together, so that the fan cover 11 and the fan blades 12 may perform the three-dimensional swing motion together under the driving of the rotation-swing mechanism 3. As a result, the product may works in a cool way, which solves the problem of serious homogeneity and no different selling points of fan products, and is beneficial to the promotion and sales of the product. The rotation-swing motion of the fan cover 11 together with the fan blades 12 effectively expands the air supply area, and realizes the rotation output of the wind direction, so that the wind output from the fan is softer and more natural.
Preferably, referring to FIG. 1, FIG. 3, FIG. 4, and FIG. 6, the drive motor for air output 4 is installed inside of the fan cover 11, and the stator 41 is connected to the fan cover 11. In this solution, there is a direct connection between the fan cover 11 and the rotation-swing mechanism 3, and there is no direct connection between the stator 41 and the rotation-swing mechanism 3. Since the stator 41 is connected to the fan cover 11, it not only satisfies the design requirement that the stator 41 and the fan cover 11 are relatively stationary, but satisfies the design requirement that the stator 41 and the fan cover 11 may perform the rotation-swing motion together under the driving of the rotation-swing mechanism 3. Certainly, in specific applications, the installation manner of the drive motor for air output 4 is not limited to this. For example, when the drive motor for air output 4 is installed inside of the fan cover 11, the stator 41 may be designed to be connected with the fan cover 11 and the rotation-swing transmission counterpart 32 at the same time, or the stator 41 may be designed to be directly connected with the rotation-swing transmission counterpart 32 other than being directly connected with the fan cover 11. Or, the drive motor for air output 4 may also be designed to be installed outside of the fan cover 11, and the stator 41 is connected with the rotation-swing transmission counterpart 32. These alternatives may all not only satisfies the design requirement that the stator 41 and the fan cover 11 are relatively stationary, but satisfies the design requirement that the stator 41 and the fan cover 11 may perform the rotation-swing motion together under the driving of the rotation-swing mechanism 3.
Preferably, referring to FIG. 1, FIG. 3 and FIG. 6, the stator 41 is connected with the fan cover 11 through a connecting bracket 5, so that the flexible design of the connecting bracket 5 may be used to meet the different assembly requirements of the drive motor for air output 4 and the fan cover 11. Therefore, it is beneficial to simplify the installation structure of the drive motor for air output 4 and the fan cover 11. Certainly, as an alternative, the stator 41 may also be designed to be directly connected with the fan cover 11 without the connecting bracket 5.
Preferably, referring to FIGS. 1 and 3 to 6, the fan cover 11 includes: a main cover 111; a front mesh 112, fit at one end of the main cover 111; and a rear mesh 113, fit at the other end of the main cover 111 and connected to the rotation-swing transmission counterpart 32. Specifically, the rear mesh 113 is connected with the connecting rod 323 of the rotation-swing transmission counterpart 32. The fan blades 12 and the drive motor for air output 4 are housed in a cavity enclosed by the main cover 111, the front mesh 112, and the rear mesh 113. The front mesh 112 is at the air outlet side of the air outlet base 1, and the rear mesh 113 is at the air inlet side of the air outlet base 1. Since the front mesh 112 and the rear mesh 113 are both connected with the main cover 111, when the rotation-swing transmission counterpart 32 drives the main cover 111 to perform a rotation-swing motion, the front mesh 112 and the rear mesh 113 may perform a rotation-swing motion together.
In this embodiment, the stator 41 is connected to the rear mesh 113 through the connecting bracket 5. Certainly, in specific applications, the stator 41 may also be directly connected with the rear mesh 113.
Preferably, the first spherical surface 110 is disposed on the main cover 111. Since both the front mesh 112 and the rear mesh 113 need to be designed with a grid structure that facilitates air circulation, while the main cover 111 does not need to be designed with a grid structure and its structure is relatively simple, the first spherical surface 110 may be formed on the main cover 111, so that the processing difficulty is low and the processing cost is low as well. Certainly, in specific applications, the first spherical surface 110 is not limited to the design manner formed on the main cover 111, for example, the first spherical surface 110 may also be formed on the main cover 111.
Further, referring to FIG. 6, the present embodiment further provides a fan including the above-mentioned fan head assembly 100 and a base assembly 200 connected with the fan head assembly 100, and the air inlet base 2 is mounted on the base assembly 200. The base assembly 200 is mainly used to support the fan head assembly 100 to realize the placement of the fan in an application scenario. According to present embodiment, the fan adopts the above-mentioned fan head assembly 100. As a result, in a first aspect, the range of the air supply area of the fan is expanded, and the rotation output of the wind direction is realized, so that the wind output from the fan is softer and more natural; in a second aspect, it is beneficial to reduce the cost of the product and improve the product's motion reliability; in a third aspect, the product may works in a cool way, which increases differentiated selling points of fan products, and is beneficial to the promotion and sales of the product.
Preferably, referring to FIG. 6, the base assembly 200 includes: a base body 201; and an oscillation mechanism 202, mounted on the base body 201 and configured to drive the fan head assembly 100 to rotate reciprocally, the air inlet base 2 being connected to the oscillation mechanism 202. Specifically, the oscillation mechanism 202 includes an oscillation motor and a crank rocker mechanism. The arrangement of the rotation-swing mechanism 202 enables the fan head assembly 100 to perform a planar oscillation motion, thereby facilitating the expansion of the air supply area of the product.
Preferably, in this embodiment, the fan is a table fan or a floor fan. Certainly, in specific applications, the fan provided in this embodiment may also be a pedestal fan or a wall fan. That is, the fan head assembly 100 of this embodiment may be applied to a floor fan, a table fan, a pedestal fan, or a wall fan. As a result, the air supply area may be expanded, the wind output from the fan may be softer and more natural, the product's motion reliability may be improved, the coolness of product operation may be improved, and the differentiated selling points of product may be increased.
The above-mentioned embodiments are only preferred embodiments of the present disclosure.Thus , they do not limit the scope of the present disclosure, and the equivalent structural transformation made by the content of the specification and the drawings of the present disclosure, or directly/indirectly applied to other related technical fields are all included in the protection scope of the present disclosure for patent application.

Claims

A fan head assembly, comprising:
an air outlet base; and

an air inlet base, provided at one side of the air outlet base;

characterized in that the fan head assembly further comprises:
a rotation-rotation-swing mechanism, configured to drive the air outlet base to rotationally rotation-swing relative to the air inlet base;

wherein the rotation-rotation-swing mechanism comprises:
a rotation-rotation-swing drive motor, mounted on the air inlet base; and

a rotation-rotation-swing transmission counterpart, transmissively connecting the rotation-rotation-swing drive motor and the air outlet base.
The fan head assembly according to claim 1, characterized in that:
the air outlet base comprises a first spherical surface; and

the air inlet base comprises a second spherical surface in clearance fit with the first spherical surface;

wherein:
a spherical center of the first spherical surface is configured to coincide with a spherical center of the second spherical surface; and

the first spherical surface is configured to cover outside of the second spherical surface, or the second spherical surface is configured to cover outside of the first spherical surface.
The fan head assembly according to claim 2, characterized in that a clearance between the first spherical surface and the second spherical surface is configured to be no less than 1mm and no more than 12mm.
The fan head assembly according to claim 2, characterized in that:
the rotation-rotation-swing drive motor comprises:
an output shaft; and

the rotation-rotation-swing transmission counterpartcounterpart comprises:
a cam, fit on the output shaft;

a connecting sleeve, sleeved on the cam;

a connecting rod, connected with the connecting sleeve; and

a universal ball hinge structure, sleeved on the connecting rod and connected with the air inlet base;

wherein:
the air outlet base is configured to be connected with the connecting rod; and

the spherical center of the first spherical surface, the spherical center of the second spherical surface, and a spherical center of the universal ball hinge structure are configured to coincide with each other.
The fan head assembly according to claim 4, characterized in that:
the cam is configured to be an eccentric wheel; and

an included angle A between a central axis of the connecting rod and a central axis of the output shaft is configured to be more than 0 degree and no more than 30 degrees.
The fan head assembly according to claim 5, characterized in that A=5°±3°.
The fan head assembly according to claim 4, characterized in that the universal ball hinge structure comprises:
a universal ball sleeve, connected with the air inlet base;

a universal ball, sleeved on the connecting rod and penetrating through the universal ball sleeve; and

a ball fixing cover, sleeved on one end of the universal ball and connected with the universal ball sleeve.
The fan head assembly according to claim 4, characterized in that:
the connecting rod comprises:
a first rod body; and

a second rod body, having an outer diameter smaller than an outer diameter of the first rod body;

wherein:
an end of the first rod body away from the second rod body is configured to be sleeved on the connecting sleeve;

the universal ball hinge structure is configured to be sleeved on the second rod body; and

the air outlet base is configured to be connected to the second rod body; and/or,

the connecting rod is configured to be a hollow structure.
The fan head assembly according to claim 4, characterized in that the air inlet base comprises:
an air inlet mesh cover, the second spherical surface being configured to be provided on the air inlet mesh cover; and

a mounting bracket, mounted inside of the air inlet mesh cover, one end of the mounting bracket being connected with the rotation-rotation-swing drive motor, the other end of the mounting bracket being connected with the universal ball hinge structure.
The fan head assembly according to claim 9, characterized in that the air inlet mesh cover comprises:
a mesh cover body;

a middle frame, mounted at one end of the mesh cover body, the second spherical surface being configured to be provided on the middle frame; and

a sleeve, protruded inside of the mesh cover body, the mounting bracket and the rotation-rotation-swing drive motor being both configured to be housed inside of the sleeve.
The fan head assembly according to claim 10, characterized in that the air inlet base further comprises:
a plastic connector, the mounting bracket being connected to the sleeve through the plastic connector; and

a damping pad, comprising:
a first damping portion, provided between the mounting bracket and the sleeve;

a second damping portion, provided between the mounting bracket and the universal ball hinge structure; and

a third damping portion, extending to be abutted against an inner side wall of the sleeve.
The fan head assembly according to claim 1, characterized in that the air outlet base comprises:
a fan cover, connected with the rotation-rotation-swing transmission counterpart; and

a fan blade, provided inside of the fan cover;

wherein the fan head assembly further comprises:
a drive motor for air outputfor air output, connected with the fan blade and configured to drive the fan blade to rotate;

wherein the first motor comprises:
a stator, configured to be static relative to the fan cover; and

a rotor, rotatably connected with the stator and statically connected with the fan blade relatively.
The fan head assembly according to claim 2, characterized in that the air outlet base comprises:
a fan cover, connected with the rotation-rotation-swing transmission counterpart; and

a fan blade, provided inside of the fan cover;

wherein the fan head assembly further comprises:
a drive motor for air outputfor air output, connected with the fan blade and configured to drive the fan blade to rotate;

wherein the first motor comprises:
a stator, configured to be static relative to the fan cover; and

a rotor, rotatably connected with the stator and statically connected with the fan blade relatively.
The fan head assembly according to claim 12, characterized in that:
the drive motor for air outputfor air output is configured to be provided inside of the fan cover, and the stator is configured to be connected with the fan cover and/or the rotation-rotation-swing transmission counterpart; or,

the drive motor for air outputfor air output is configured to be provided outside of the fan cover, and the stator is configured to be connected with the rotation-rotation-swing transmission counterpart.
The fan head assembly according to claim 14, characterized in that the fan cover comprises:
a main cover;

a front mesh, fit at one end of the main cover; and

a rear mesh, fit at the other end of the main cover and connected to the rotation-rotation-swing mechanism.
A fan, characterized by comprising:
a fan head assembly, comprising:
an air outlet base; and

an air inlet base, provided at one side of the air outlet base; and

a base assembly, connected with the fan head assembly, the air inlet base being mounted on the base assembly;

characterized in that the fan further comprises:
a rotation-rotation-swing mechanism, configured to drive the air outlet base to rotationaly rotation-swing relative to the air inlet base;

wherein the rotation-rotation-swing mechanism comprises:
a rotation-rotation-swing drive motor, mounted on the air inlet base; and

a rotation-rotation-swing transmission counterpart, transmissively connecting the rotation-rotation-swing drive motor and the air outlet base.
The fan according to claim 16, characterized in that:
the air outlet base comprises a first spherical surface; and

the air inlet base comprises a second spherical surface in clearance fit with the first spherical surface;

wherein:
a spherical center of the first spherical surface is configured to coincide with a spherical center of the second spherical surface; and

the first spherical surface is configured to cover outside of the second spherical surface, or the second spherical surface is configured to cover outside of the first spherical surface.
The fan according to claim 17, characterized in that a clearance between the first spherical surface and the second spherical surface is configured to be no less than 1mm and no more than 12mm.
The fan according to claim 16, characterized in that the base assembly comprises:
a base body; and

an oscillation mechanism, mounted on the base body and configured to drive the fan head assembly to rotate reciprocally, the air inlet base being connected to the oscillation mechanism.
The fan according to claim 16, characterized in that the fan is configured to be a floor fan, a table fan, a pedestal fan, or a wall fan.