Connecting assembly and fan

Abstract

A connecting assembly (10) for a fan and a fan (100). The connecting assembly comprises: a first interface assembly (1), comprising a first housing (11) and an actuator (12) that is accommodated within the first housing, the actuator being configured to connect to a mount (20) of the fan and being rotatable relative to the first housing along a first axis (A1); a second interface assembly (2), comprising a second housing (21), the second housing being configured to connect to a fan head (30) of the fan; and a rotating module (3), comprising a first module (31) and a second module (32) capable of rotating with each other along a second axis (A2). The second axis is perpendicular to the first axis. The first module is rotatably and fixedly connected to the first interface assembly, and the second module is rotatably and fixedly connected to the second interface assembly, enabling the first interface assembly and the second interface assembly to rotate relative to each other along the second axis.

Description

Connecting components and fans

[0001] This application claims priority to Chinese Patent Application No. 202420290504.0 filed on February 8, 2024, and the contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as a part of this application. Technical Field

[0002] The present disclosure relates to a connection assembly for a fan and a fan including such a connection assembly. Background Art

[0003] Fans are a common household appliance that typically includes a fan head, a bracket, and a connecting assembly connecting the fan head and the bracket. To provide multi-angle air supply, the connecting assembly typically has a rotation function with at least one degree of freedom.

[0004] Common floor-standing fans include large brackets or bases, resulting in a large overall size and limited flexibility. In some indoor or outdoor applications, portable, lightweight, and highly flexible fans are required, which requires a connection component that can achieve both vertical and horizontal head swing (pitch).

[0005] Conventional devices for achieving compound swinging heads typically use two synchronous motors to drive two rotating shafts to achieve vertical and horizontal swinging, respectively. This structure has the disadvantages of high cost and fragility. In addition, these devices have limited swing angles, resulting in a limited air supply range for the fan.

[0006] Therefore, there is a need for a new type of connecting assembly for a fan and a fan including such a connecting assembly, which can realize up and down swinging and left and right swinging, have a large swing angle range, a simple structure and a compact size.

[0007] Summary of the Invention

[0008] In response to the above-mentioned problems and needs, the present disclosure proposes a new connection assembly and fan for a fan, which solves the above-mentioned problems and brings other technical effects by adopting the following technical features.

[0009] On the one hand, the present disclosure provides a connection assembly for a fan, comprising: a first interface assembly, including a first shell and an actuator accommodated in the first shell, the actuator being configured to be connected to a bracket of the fan and being capable of rotating along a first axis relative to the first shell; a second interface assembly, including a second shell, the second shell being configured to be connected to a fan head of the fan; and a rotation module, including a first module and a second module capable of rotating relative to each other along a second axis, the second axis being perpendicular to the first axis, wherein the first module is rotationally fixedly connected to the first interface assembly, and the second module is rotationally fixedly connected to the second interface assembly, so that the first interface assembly and the second interface assembly can rotate relative to each other along the second axis.

[0010] In some examples, the first module and the second module are coaxially arranged along a second axis, wherein the first module includes a first friction disc including a circumferentially distributed first friction surface, and the second module includes a second friction disc including a circumferentially distributed second friction surface, the first friction surface and the second friction surface are in contact with each other and can rotate relative to each other along the second axis, wherein the first friction disc is rotationally fixedly connected to the first housing, and the second friction disc is rotationally fixedly connected to the second housing.

[0011] In some examples, the first friction surface and the second friction surface are planar, and the friction between the first friction surface and the second friction surface allows the first friction disc and the second friction disc to maintain contact at any angle; or the first friction surface and the second friction surface are non-planar, including tooth-like structures or periodic curved surfaces.

[0012] In some examples, the first module further includes an intermediate connector fixedly connected to the first housing and rotationally fixedly connected to the first friction plate.

[0013] In some examples, the second friction disc is provided with an angle limiting portion on a surface opposite to the second friction surface, the angle limiting portion protruding from the surface and extending circumferentially, the angle limiting portion having a first circumferential angle α1, the first module also includes an angle limiting member, the angle limiting member includes a main body and a fan-shaped portion extending circumferentially along the main body, the fan-shaped portion and the angle limiting portion are arranged in the same plane, the main body is fixedly connected to the intermediate connecting member or the first friction disc, and the fan-shaped portion has a second circumferential angle α2.

[0014] In some examples, the angle limiting portion is spaced apart from the sector portion by a third circumferential angle α3 along a first direction, and the angle limiting portion is spaced apart from the sector portion by a fourth circumferential angle α4 along a second direction opposite to the first direction, wherein the first circumferential angle α1, the second circumferential angle α2, the third circumferential angle α3, and the fourth circumferential angle α4 satisfy the following relationship: α1+α2+α3+α4=360°,

[0015] The third circumferential angle α3 defines the maximum angle by which the second module can rotate relative to the first module along the first direction, and the fourth circumferential angle α4 defines the maximum angle by which the second module can rotate relative to the first module along the second direction.

[0016] In some examples, one of the first friction disc and the intermediate connecting member is circumferentially provided with at least one first anti-rotation protrusion, and the other of the first friction disc and the intermediate connecting member is circumferentially provided with at least one first anti-rotation recess that cooperates with the at least one first anti-rotation protrusion, and / or

[0017] One of the second friction disc and the second housing is circumferentially provided with at least one second anti-rotation protrusion, and the other of the second friction disc and the second housing is circumferentially provided with at least one second anti-rotation recess that cooperates with the at least one second anti-rotation protrusion.

[0018] In some examples, the first housing is formed by combining two housing halves, or is integrally formed as a single piece.

[0019] In some examples, the first shell is cylindrical in shape, wherein the connection assembly includes two rotation modules, respectively disposed at opposite ends of the first shell, the second shell is respectively rotationally fixedly connected to the two rotation modules, and the second shell is supported on the first shell via the two rotation modules, wherein the second shell includes an opening perpendicular to the second axis, the rotation module is mounted to the first shell and / or the second shell through the opening along the second axis, and the second interface assembly also includes a cover, which is snap-connected to the second shell and covers the opening.

[0020] In some examples, an elastic return member is provided between the intermediate connecting member and the first friction disc, and the elastic return member applies a biasing force on the first friction disc toward the second friction disc, or an elastic return member is provided between the second friction disc and the second housing, and the elastic return member applies a biasing force on the second friction disc toward the first friction disc.

[0021] On the other hand, the present disclosure further provides a fan, comprising a fan head, a bracket, and the aforementioned connecting assembly, wherein the bracket is connected to the first interface assembly, and the fan head is connected to the second interface assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0023] FIG1 shows a perspective view of a connection assembly according to at least one embodiment of the present disclosure;

[0024] FIG2 shows another perspective view of a connection assembly according to at least one embodiment of the present disclosure;

[0025] FIG3 shows a perspective view of a rotation module according to at least one embodiment of the present disclosure;

[0026] FIG4 illustrates a side view of a connection assembly according to at least one embodiment of the present disclosure, wherein a cover of the second interface assembly is omitted;

[0027] FIG5 shows a perspective view of a second friction disk according to at least one embodiment of the present disclosure;

[0028] FIG6 shows another perspective view of a second friction disc according to at least one embodiment of the present disclosure;

[0029] FIG7 shows a perspective view of a second housing according to at least one embodiment of the present disclosure;

[0030] FIG8 shows a perspective view of a cover according to at least one embodiment of the present disclosure;

[0031] FIG9 illustrates another perspective view of a cover according to at least one embodiment of the present disclosure;

[0032] FIG10 illustrates a perspective view of a connection assembly according to at least one embodiment of the present disclosure, with the cover and one housing half omitted;

[0033] FIG11 illustrates a perspective view of a connection assembly according to at least one embodiment of the present disclosure, wherein the cover and the first housing are omitted;

[0034] FIG12 shows a perspective view of a rotation module according to at least one embodiment of the present disclosure;

[0035] FIG13 shows a front view of a rotation module according to at least one embodiment of the present disclosure;

[0036] FIG14 shows a cross-sectional view of the rotation module taken along line AA of FIG13;

[0037] FIG15 shows a front view of an intermediate connecting member and a first friction disc according to another embodiment of the present disclosure, wherein an elastic return member is provided between the intermediate connecting member and the first friction disc;

[0038] FIG16 shows a cross-sectional view taken along line BB of FIG15;

[0039] FIG17 shows a perspective view of an elastic return member according to at least one embodiment of the present disclosure;

[0040] FIG18 shows a perspective view of a first friction disc according to at least one embodiment of the present disclosure;

[0041] FIG19 shows another perspective view of the first friction disc according to at least one embodiment of the present disclosure;

[0042] FIG20 shows a perspective view of an intermediate connector according to at least one embodiment of the present disclosure;

[0043] FIG21 shows another perspective view of an intermediate connector according to at least one embodiment of the present disclosure;

[0044] FIG22 shows a front view of an angle limiter according to at least one embodiment of the present disclosure;

[0045] FIG23 shows a perspective view of an angle limiter according to at least one embodiment of the present disclosure;

[0046] FIG24 shows a perspective view of a connection assembly according to another embodiment of the present disclosure;

[0047] FIG25 illustrates a perspective view of a fan according to at least one embodiment of the present disclosure, wherein the second interface assembly is in an initial position;

[0048] FIG26 is a side view of FIG25;

[0049] FIG27 is a schematic diagram showing the relative positions of the first module and the second module at the position shown in FIG26 ;

[0050] FIG28 illustrates a perspective view of a fan according to at least one embodiment of the present disclosure, wherein the second module is located at a first extreme position of rotation along a first direction;

[0051] FIG29 is a schematic diagram showing the relative positions of the first module and the second module at the position shown in FIG28 ;

[0052] FIG30 illustrates a perspective view of a fan according to at least one embodiment of the present disclosure, wherein the second module is located at a second extreme position of rotation along a second direction;

[0053] FIG31 is a schematic diagram showing the relative positions of the first module and the second module at the position shown in FIG30 ;

[0054] FIG32 shows a perspective view of a fan according to yet another embodiment of the present disclosure;

[0055] FIG33 shows a perspective view of a fan according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present disclosure. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0057] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0058] It should be noted that the term "rotationally fixed connection" as used herein means that the two parts cannot rotate relative to each other along the rotational axis, but does not restrict relative motion between the two parts along the rotational axis. Common methods for achieving rotationally fixed connections include: keyway connections, protrusion-recess mating connections, or non-circular shaft-hole connections. Of course, fixed connections are also included in the scope of rotationally fixed connections, as when two parts are completely fixedly connected, relative rotation is also impossible.

[0059] Preferred embodiments of a connection assembly and a fan according to the present disclosure will be described in detail below with reference to the accompanying drawings.

[0060] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, without departing from the concept of the present disclosure, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0061] Figures 1 through 4 illustrate a connection assembly 10 for a fan 100 according to at least one embodiment of the present disclosure, and Figure 26 illustrates a fan 100 according to at least one embodiment of the present disclosure. As shown in Figures 1 through 4 and 26 , the connection assembly 10 includes a first interface assembly 1, a second interface assembly 2, and a rotation module 3. The first interface assembly 1 is used to connect to the bracket 20 of the fan 100, and the second interface assembly 2 is used to connect to the fan head 30 of the fan 100.

[0062] For the fan 100, the fan head 30 may include blades, a mesh cover, and a drive motor. The blades are arranged in the mesh cover and connected to the drive motor. The drive motor drives the blades to rotate, thereby achieving air supply. The drive motor may be an AC motor or a DC motor.

[0063] Bracket 20 includes a base 201 and a connecting arm 202 extending from base 201. Connecting arm 202 is connected to first interface assembly 1. In the embodiment shown in FIG26 , fan 100 can be a wall-mounted fan, and base 201 can be attached to a wall or hung from an outdoor bracket. Bracket 20 shown in this disclosure is for illustrative purposes only and is not intended to be limiting. The connecting assembly 10 and fan 100 proposed in this disclosure can be applied to a variety of fan types, including but not limited to stand fans, wall-mounted fans, rooftop fans, and the like.

[0064] Further, as shown in Figures 10 and 11, the first interface assembly 1 includes a first shell 11 and an actuator 12, and the actuator 12 is accommodated in the first shell 11. The actuator 12 can be, for example, a conventional swing head motor assembly, including a motor, a reducer and an output shaft, and the output shaft has a threaded mounting hole to be threadedly connected to the connecting arm 202 of the bracket 20. When the actuator 12 is working, it drives the output shaft to rotate. Since the connecting arm 202 is fixed, the first shell 11 can rotate along the first axis A1 relative to the bracket 20. As shown in Figure 11, the first axis A1 is the axis along the output shaft of the actuator 12. After being installed in place, as shown in Figure 27, the first axis A1 is also the axis along the vertical direction. Therefore, the rotation of the actuator 12 relative to the first shell 11 can enable the fan head 30 to swing left and right in the horizontal plane relative to the bracket 20.

[0065] For example, in the embodiments shown in FIG. 1 and FIG. 2 , the first housing 11 may be formed by combining two housing halves.

[0066] For example, as shown in Figures 1 and 2 , a button 50 may be provided on the first housing 11 to facilitate user control of the start / stop, air volume, or swing of the fan 100. The position of the button 50 may be adjusted as needed, for example, by being provided at a different location on the sidewall of the first housing 11. In the embodiment shown in Figures 1 and 2 , the button 50 is provided on one of the housing halves.

[0067] Alternatively, in another embodiment shown in FIG. 25 , the first shell 11 may be integrally formed as a single piece, and the button 50 is disposed at an upper position of the first shell 11 .

[0068] For example, as shown in Figure 10, the first housing 11 is generally cylindrical in shape, including sidewalls and a hollow interior cavity, in which the actuator 12 is housed. Opposite ends of the sidewalls define openings, each of which can be provided with a rotation module 3. Alternatively, the connection assembly 10 can include only one rotation module 3, which is disposed at one end of the first housing 11 and supported by a bearing at the other end. Alternatively, the connection assembly 10 can include a larger number of rotation modules 3, which are coaxially arranged with each other.

[0069] The second interface assembly 2 includes a second shell 21 and a cover 22. The second shell 21 is configured to be connected to the fan head 30 of the fan 100. For example, as shown in FIG7 , the second shell 21 has a roughly U-shaped shape, and a cylinder 212 and an opening 211 opened in the cylinder 212 are coaxially provided at both ends of the U-shape for accommodating the rotation module 3. The opening 211 is perpendicular to the second axis A2, which is also the rotation axis of the rotation module 3. An arm 213 is also provided on the side of the cylinder 212 opposite to the opening to prevent the rotation module 3 from falling out. The rotation module 3 can be installed to the first shell 11 and / or the second shell 12 through the opening 211 along the second axis A2. As shown in FIG8 , the cover 22 has a disc shape and a snap-fit ​​portion 221 is provided on the surface of one side for snap-fit ​​connection with the second shell 21, and the cover 22 can cover the opening 211. In addition, a second anti-rotation recess 82 may be provided on the wall 213 , and the function of the second anti-rotation recess 82 will be described in detail later.

[0070] 1 and 2 show the connection assembly 10 after installation. It can be seen that the actuator 12 and the rotation module 3 are completely accommodated in the space enclosed by the first housing 11, the second housing 21 and the cover 22, and the appearance is beautiful and simple.

[0071] As shown in FIG3 , the rotation module 3 includes a first module 31 and a second module 32, which are coaxially arranged along a second axis A2 and are capable of rotating relative to each other along the second axis A2. In the present disclosure, the second axis A2 is perpendicular to the first axis A1. The first module 31 is rotationally fixedly connected to the first interface assembly 1, and the second module 32 is rotationally fixedly connected to the second interface assembly 2, so that the first interface assembly 1 and the second interface assembly 2 can rotate relative to each other along the second axis. Therefore, the fan head 30 connected to the second interface assembly 2 can swing up and down (pitch) in a horizontal plane relative to the bracket 20 of the first interface assembly 1.

[0072] Different from the known dual-motor composite swing device, the connection assembly 10 proposed in the present disclosure only requires a rotating module 3 and a motor to realize composite swing such as up and down swing and left and right swing, with a simple structure and low cost.

[0073] The following will describe the rotation module 3 according to at least one embodiment of the present disclosure in conjunction with Figures 4 to 24, and the effects of the technical solution of the present disclosure will be reflected in the description.

[0074] The first module 31 and the second module 32 must meet the following requirements: first, they must be able to rotate relative to each other, which can be driven manually or by a motor. Second, the first and second friction discs must maintain contact at any angle, ensuring that the fan head 30 and the bracket 20 remain relatively fixed within the rotatable angle range without rotation or shaking. Furthermore, the rotation of the first and second modules 31 and 32 can be synchronized to produce sound, providing users with rotational feedback and a better experience.

[0075] In order to achieve these functions, the first module 31 and the second module 32 in at least one embodiment of the present disclosure may be implemented by friction disks that are relatively rotatable and in frictional contact with each other.

[0076] Specifically, as shown in Figures 19 and 20, the first module 31 may include a first friction disc 4, which is rotationally fixedly connected to the first housing 11. The first friction disc 4 includes a circumferentially distributed first friction surface 41 and a first through-hole 42. The first friction surface 41 is provided on one side of the first friction disc 4 and is generally annularly distributed throughout the entire circumference. Alternatively, the first friction surface 41 may be distributed only within a certain circumferential angular range to limit the angular range of relative rotation between the first module 31 and the second module 32.

[0077] In this embodiment, the first friction surface 41 is non-planar, and in particular has a tooth-like structure, which can both provide damping and generate sound during the rotation process, thereby providing the user with a better interactive experience.

[0078] Alternatively, the first friction surface 41 may be another non-planar structure, such as a periodic curved surface. Unlike the step-change curvature of the toothed structure, the periodic curved surface has a uniform curvature change, such as a wavy surface. The non-planar structure can also provide acoustic interaction during rotation.

[0079] 5 and 6 , the second module 32 may include a second friction disc 5, which includes a circumferentially distributed second friction surface 51, a surface 52 opposite to the second friction surface 52, and a second through hole 54 extending through the second friction surface 51 and the surface 52. The second friction surface 51 and the first friction surface 41 are in contact with each other and can rotate relative to each other along the second axis A2.

[0080] In this embodiment, the second friction surface 51 is also non-planar, and in particular has a tooth-like structure. The tooth-like structure can not only play a damping role during the rotation, but also generate sound, providing the user with a better interactive experience.

[0081] Alternatively, the second friction surface 51 may have other non-planar structures, such as a periodic curved surface. Unlike the step-change curvature of the tooth-like structure, the periodic curved surface has a uniform curvature change, such as a wavy surface. The second friction surface 51 may have the same tooth-like structure as the first friction surface 41 or other non-planar structures.

[0082] Alternatively, the first friction surface 41 and the second friction surface 51 may also be planar structures with friction damping, and the friction force between the first friction surface 41 and the second friction surface 51 allows the first friction disc 4 and the second friction disc 5 to maintain contact at any angle.

[0083] In this embodiment, the surface 52 of the second friction disc 51 may be provided with an angle limiting portion 53, which protrudes from the surface 52 and extends circumferentially. The angle limiting portion 53 may be sector-shaped and have a first circumferential angle α1.

[0084] The second friction disc 5 is rotationally fixedly connected to the second housing 21, thereby transmitting the rotational motion of the second friction disc 5 to the second housing 21. Specifically, the second friction disc 5 is circumferentially provided with a plurality of second anti-rotation protrusions 72. The second anti-rotation protrusions 72 can cooperate with a plurality of second anti-rotation recesses 82 of the second housing 21, thereby rotationally fixing the second friction disc 5 to the second housing 21. Alternatively, the second anti-rotation protrusions 72 and the second anti-rotation recesses 82 can be oppositely arranged on the circumference of the second housing 21 and the second friction disc 5, respectively.

[0085] In actual applications, due to possible physical interference between the bracket 20, fan head 30, and connecting assembly 10, the rotation angle range of the first module 31 relative to the second module 32 is usually not a full 360 degrees. Therefore, in order to prevent excessive rotation between the bracket 20 and fan head 30, the rotation angle range of the rotating module 3 needs to be limited.

[0086] The first housing 11 is in the shape of a rotating body, which makes the rotatable angle range between the first interface component 1 and the second interface component 2 larger. In order to limit the rotation angle, an angle limiting structure can be provided between the first module 1 and the second module 2.

[0087] Exemplarily, as shown in Figures 23 and 24, the first module 31 may include an angle limiter 6, including a main body 61 and a sector-shaped portion 62 extending circumferentially along the main body 61. The sector-shaped portion 62 may have a second circumferential angle α2. The sector-shaped portion 62 and the angle limiter 53 are arranged in the same plane, preferably within the same radius. The main body 61 may be fixedly connected to the first friction disc 4, for example, by screws. Therefore, as the first module 31 and / or the second module 32 rotates, the sector-shaped portion 62 of the angle limiter 6 may contact the angle limiter 53 in two directions, for example, clockwise or counterclockwise, and prevent further rotation, thereby limiting the rotatable angle of the connecting assembly 1.

[0088] This disclosure illustrates another embodiment of the angle limiter 6. As shown in Figures 21 and 22, the first module 31 may further include an intermediate connector 13, which is fixedly connected to the first housing 11, for example, by screws. Furthermore, the intermediate connector 13 is rotationally fixedly connected to the first friction disc 4. In this embodiment, the main body 61 of the angle limiter 6 is fixedly connected to the intermediate connector 13.

[0089] To achieve a rotationally fixed connection, the intermediate connector 13 may be circumferentially provided with a plurality of first anti-rotation protrusions 71. Accordingly, on the surface opposite the intermediate connector 13, the first friction disc 4 may be circumferentially provided with a plurality of first anti-rotation recesses 81 that cooperate with the plurality of first anti-rotation protrusions 71, for rotationally fixed connection with the intermediate connector 13.

[0090] Alternatively, the first anti-rotation protrusion 71 and the first anti-rotation recess 81 may also be oppositely arranged in the circumferential directions of the intermediate connecting member 13 and the first friction disk 4 respectively.

[0091] Figures 12 to 14 illustrate the interplay of the first and second modules 31, 32. Axially along the second axis A2, the angle limiter 6, second friction disc 5, first friction disc 4, and intermediate connector 13 are closely positioned in sequence. The intermediate connector 13 can abut against the wall 213 of the second housing 21, and the angle limiter 6 can be pressed against by the cover 22, maintaining an axial compressive force. This ensures close contact between the first and second friction discs 4, 5, preventing slippage.

[0092] As shown in FIG14 , the main body 61 of the angle limiter 6 can sequentially pass through the first through hole 42 of the first friction disc 4 and the second through hole 54 of the second friction disc 5 , and make the fan-shaped portion 62 and the angle limiter 53 in the same plane and at the same radius.

[0093] Alternatively, inspired by the concepts of this disclosure, those skilled in the art will readily conceive of other alternative embodiments of the angle limiting structure. For example, an angle limiting portion 53 may be provided on the first friction disc 4 (instead of the second friction disc 5), and the rotation angle may be limited by the cooperation between the angle limiting member 6 and the angle limiting portion 53.

[0094] Optionally, to maintain close contact between the first friction disc 4 and the second friction disc 5, an elastic return member 9 may be provided between the intermediate connector 6 and the first friction disc 4. Figures 15 to 17 illustrate this embodiment. As shown in Figures 15 and 16, the elastic return member 9 applies a biasing force F to the first friction disc 4 toward the second friction disc 5. As shown in Figure 17, the elastic return member 9 may be a wavy elastic washer, but the present disclosure is not limited thereto. The elastic return member 9 may also be a spring such as a leaf spring, torsion spring, wave spring, flat spring, disc spring, or a rubber elastic member.

[0095] Alternatively, in another embodiment not shown, an elastic return member 9 may be provided between the second friction disc 5 and the second housing 21 , and the elastic return member 9 applies a biasing force on the second friction disc 5 toward the first friction disc 4 .

[0096] On the other hand, the present disclosure further provides a fan 100 , comprising a bracket 20 , a fan head 30 and the aforementioned connecting assembly 10 . The bracket 20 is connected to the first interface assembly 1 , and the fan head 30 is connected to the second interface assembly 2 .

[0097] In the embodiment shown in FIG26 , the fan 100 can be a wall-mounted fan, and the base 201 of the bracket 20 can be attached to the wall. In the embodiment shown in FIG32 , the fan 100 is a standing fan, and the bracket 20 is a tripod for easy storage and portability. In the embodiment shown in FIG33 , the fan 100 is a standing fan, and the base 201 of the bracket 20 is placed on the ground.

[0098] 26 to 31 exemplarily show schematic diagrams of the fan 100 at an initial position and two extreme positions, and schematic diagrams of the relative positions of components of the first module 31 and the second module 32 at corresponding positions.

[0099] First, as shown in FIG27 , the angle limiting portion 53 and the sector-shaped portion 62 of the angle limiting member 6 are spaced apart by a third circumferential angle α3 along a first direction D1 (clockwise in the figure), and the angle limiting portion 53 and the sector-shaped portion 62 are spaced apart by a fourth circumferential angle α4 along a second direction D2 (counterclockwise in the figure) opposite to the first direction D1. As can be seen from the figure, the first circumferential angle α1, the second circumferential angle α2, the third circumferential angle α3, and the fourth circumferential angle α4 satisfy the following formula (I): α1+α2+α3+α4=360°(I),

[0100] The third circumferential angle α3 defines the maximum angle by which the second module 32 can rotate relative to the first module 31 along the first direction, and the fourth circumferential angle α4 defines the maximum angle by which the second module 32 can rotate relative to the first module 31 along the second direction.

[0101] The fan head 30 and the bracket 20 may have a relatively large angle adjustment range. For example, the third circumferential angle α3 may be in the range of 30° to 120°, and the fourth circumferential angle α4 may be in the range of 10° to 90°.

[0102] The values ​​of the third circumferential angle α3 and the fourth circumferential angle α4 can be selected within the above range according to actual needs. For example, the third circumferential angle α3 can be 90°, and the fourth circumferential angle α4 can be 60°. Once the third circumferential angle α3 and the fourth circumferential angle α4 are determined, it can be concluded that α1+α2=210°(II) according to formula (I), and then, given a first circumferential angle α1, the value to be set for the second circumferential angle α2 can be obtained. For example, in this embodiment, the first circumferential angle α1 is 90°, then the second circumferential angle α2 is 120°. One of the first circumferential angle α1 and the second circumferential angle α2 can be arbitrarily selected on the premise of satisfying formula (II), so that the other angle is also determined.

[0103] FIG27 shows the initial position of the connecting assembly 10 . The initial position may be defined as, for example, making the fan head 30 approximately horizontal. At this time, the fan head 30 may deliver air in a horizontal direction, as shown in FIG26 .

[0104] When the air supply angle needs to be changed, the fan head 30 or the second housing 21 can be turned clockwise in Figure 26 to flip the fan 30 upward. At this time, the fan head 30 and the second housing 21 rotate relative to the first housing 11, causing the second module 32 to rotate relative to the first module 31. Specifically, this ultimately causes the angle limit portion 53 shown in Figure 27 to rotate along the first direction D1 until it contacts the fan-shaped portion 62. At this time, the second module 32 reaches the first extreme position of rotation along the first direction D1, as shown in Figure 29. In this embodiment, the third circumferential angle α3 is 90°, so the fan head 30 can rotate 90° to a completely vertical upward position, as shown in Figure 28.

[0105] Conversely, the fan head 30 or the second housing 21 can be rotated counterclockwise in FIG. 26 to flip the fan 30 downward. This ultimately causes the angle limiter 53 shown in FIG. 27 to rotate in the second direction D2 until it contacts the fan-shaped portion 62. At this point, the second module 32 reaches its second limit of rotation in the second direction D2, as shown in FIG. 31. In this embodiment, the fourth circumferential angle α4 is 60°, allowing the fan head 30 to rotate downward 60°, as shown in FIG. 30.

[0106] Therefore, the fan 100 including the connection assembly 10 proposed in the present disclosure can achieve up and down head swing and left and right head swing, with a large swing angle range, a simple structure and a compact size.

[0107] While exemplary embodiments of the connection assembly and fan proposed in the present disclosure have been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that various modifications and variations may be made to the aforementioned specific embodiments without departing from the principles of the present disclosure. Furthermore, various combinations of the various technical features and structures proposed in various aspects of the present disclosure may be made without departing from the scope of protection of the present disclosure, which is determined by the appended claims.

[0108] List of reference numerals 1 First interface assembly 11 First housing 12 Actuator 13 Intermediate connector 2 Second interface assembly 21 Second housing 211 Opening 212 Cylinder 213 Wall 22 Cover 221 Buckle portion 3 Rotation module 31 First module 32 Second module 4 First friction disc 41 First friction surface 42 First through hole 5 Second friction disc 51 Second friction surface 52 Surface 53 Angle limiter 54 Second through hole 6 Angle limiter 61 Main body 62 Fan-shaped portion 71 First anti-rotation protrusion 72 Second anti-rotation protrusion 81 First anti-rotation recess 82 Second anti-rotation recess 9 Elastic return member 10 Connecting assembly 20 Bracket 201 Base 30 Fan head 40 Actuator 50 Button 100 Fan A1 First axis A2 Second axis D1 First direction D2 Second direction α1 First circumferential angle α2 Second circumferential angle α3 Third circumferential angle α4 Fourth circumferential angle

Claims

1. A connection assembly for a fan, characterized in that: include: a first interface assembly comprising a first housing and an actuator housed within the first housing, the actuator being configured to be coupled to a bracket of the fan and rotatable relative to the first housing along a first axis; a second interface assembly comprising a second housing configured to be connected to a fan header of a fan; as well as a rotating module comprising a first module and a second module capable of rotating relative to each other along a second axis, wherein the second axis is perpendicular to the first axis, The first module is rotationally fixedly connected to the first interface component, and the second module is rotationally fixedly connected to the second interface component, so that the first interface component and the second interface component can rotate relative to each other along the second axis.

2. The connection assembly according to claim 1, wherein: The first module and the second module are coaxially arranged along a second axis, The first module includes a first friction disc including a circumferentially distributed first friction surface, the second module includes a second friction disc including a circumferentially distributed second friction surface, the first friction surface and the second friction surface are in contact with each other and can rotate relative to each other along a second axis. The first friction disc is rotationally fixedly connected to the first housing, and the second friction disc is rotationally fixedly connected to the second housing.

3. The connection assembly according to claim 2, wherein: The first friction surface and the second friction surface are plane, and the friction force between the first friction surface and the second friction surface allows the first friction disc and the second friction disc to maintain contact at any angle; or The first friction surface and the second friction surface are non-planar, including tooth-like structures or periodic curved surfaces.

4. The connection assembly according to claim 2, wherein: The first module further includes an intermediate connecting member fixedly connected to the first housing and rotationally fixedly connected to the first friction disc.

5. The connection assembly according to claim 4, wherein: The second friction disc is provided with an angle limiting portion on a surface opposite to the second friction surface. The angle limiting portion protrudes from the surface and extends circumferentially. The angle limiting portion has a first circumferential angle α1. The first module also includes an angle limiter, which includes a main body and a fan-shaped portion extending circumferentially along the main body. The fan-shaped portion and the angle limiter are arranged in the same plane. The main body is fixedly connected to the intermediate connecting member or the first friction disk, and the fan-shaped portion has a second circumferential angle α2.

6. The connection assembly according to claim 5, wherein: The angle limiting portion and the sector portion are spaced apart by a third circumferential angle α3 along a first direction, and are spaced apart by a fourth circumferential angle α4 along a second direction opposite to the first direction, wherein the first circumferential angle α1, the second circumferential angle α2, the third circumferential angle α3, and the fourth circumferential angle α4 satisfy the following relationship: α1+α2+α3+α4=360°, The third circumferential angle α3 defines the maximum angle by which the second module can rotate relative to the first module along the first direction, and the fourth circumferential angle α4 defines the maximum angle by which the second module can rotate relative to the first module along the second direction.

7. The connection assembly according to claim 6, wherein: The third circumferential angle α3 is within a range of 30° to 120°, and the fourth circumferential angle α4 is within a range of 10° to 90°.

8. The connection assembly according to claim 4, wherein: One of the first friction disc and the intermediate connecting member is provided with at least one first anti-rotation protrusion along the circumferential direction, and the other of the first friction disc and the intermediate connecting member is provided with at least one first anti-rotation recess along the circumferential direction to cooperate with the at least one first anti-rotation protrusion, and / or One of the second friction disc and the second housing is circumferentially provided with at least one second anti-rotation protrusion, and the other of the second friction disc and the second housing is circumferentially provided with at least one second anti-rotation recess that cooperates with the at least one second anti-rotation protrusion.

9. The connection assembly according to claim 1, wherein: The first housing is formed by enclosing two housing halves, or is integrally formed as a single piece.

10. The connection assembly according to claim 1, wherein: The first shell is cylindrical in shape, wherein the connecting assembly includes two rotating modules, which are respectively arranged at opposite ends of the first shell, and the two ends of the second shell are respectively connected to the two rotating modules in a rotationally fixed manner, and the second shell is supported on the first shell via the two rotating modules. The second shell includes an opening perpendicular to the second axis, the rotation module is installed to the first shell and / or the second shell through the opening along the second axis, and the second interface assembly also includes a cover, which is snap-connected to the second shell and covers the opening.

11. The connection assembly according to claim 4, wherein: An elastic reset member is provided between the intermediate connecting member and the first friction disc, and the elastic reset member applies a biasing force on the first friction disc toward the second friction disc, or An elastic return member is provided between the second friction disk and the second housing, and the elastic return member applies a biasing force on the second friction disk toward the first friction disk.

12. A fan, characterized in that: The device comprises a fan head, a bracket, and a connection assembly according to any one of claims 1 to 11, wherein the bracket is connected to the first interface assembly, and the fan head is connected to the second interface assembly.

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