An invisible fan

Abstract

This utility model discloses a concealed fan, comprising: a stator fixedly mounted on a connecting shaft; a magnetic ring fixedly mounted on a turntable, the connecting shaft being rotatably mounted on the turntable, and the magnetic ring surrounding the stator; multiple fan blades sequentially distributed around the central axis of the connecting shaft and rotatably mounted on the turntable; wherein, when the turntable rotates, the fan blades can rotate relative to the turntable in a direction away from the connecting shaft to a first position; when the turntable does not rotate, the fan blades can reset relative to the turntable in a direction close to the connecting shaft to a second position; the connecting shaft does not need to rotate, which can effectively avoid wear on the connecting shaft and ensure the stability of the turntable rotation; the fan blades can be folded and unfolded relative to the turntable, which can greatly reduce space occupation and reduce packaging and transportation costs when not in use or during transportation.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to an invisible fan. Background Technology

[0002] Traditional fans typically connect the fan blades to the motor shaft via a pin. The fan blades and motor are separate components, with the shaft rotating to drive the blades. However, after prolonged use, the shaft is prone to wear, causing the fan blades to wobble and generate significant noise during rotation. Furthermore, the individual blades on the fan are relatively fixed, occupying a fixed amount of space. This is especially problematic for fans with larger blade diameters, making them inconvenient for packaging and transportation. Utility Model Content

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a concealed fan.

[0004] To achieve the above objectives, the technical solution of this utility model includes the following:

[0005] The concealed fan according to a first aspect embodiment of the present invention includes:

[0006] A connecting shaft, on which a stator is fixedly mounted;

[0007] A turntable, on which a magnetic ring is fixedly mounted, and a connecting shaft is rotatably mounted on the turntable, the magnetic ring being arranged around the stator;

[0008] Fan blades, a plurality of said fan blades are sequentially distributed around the central axis of the connecting shaft and rotatably mounted on the turntable; wherein,

[0009] When the turntable rotates, the fan blades can rotate relative to the turntable in a direction away from the connecting shaft to a first position;

[0010] When the turntable is not rotating, the fan blades can be reset to the second position relative to the turntable in a direction close to the connecting shaft.

[0011] The invisible fan according to the embodiments of the present invention has at least the following beneficial effects: the connecting shaft does not need to rotate, which can effectively avoid wear on the connecting shaft and ensure the stability of the turntable rotation; the fan blades can be folded and unfolded relative to the turntable, which can greatly reduce space occupation and reduce packaging and transportation costs when not in use or during transportation.

[0012] According to some embodiments of the present invention, the turntable includes a first housing and a second housing that are fixedly connected to each other, a mounting cavity is defined between the first housing and the second housing, the magnetic ring is located in the mounting cavity and fixed on the second housing, the connecting shaft is rotatably inserted through the first housing and the second housing, and each of the fan blades is rotatably mounted on the first housing.

[0013] According to some embodiments of the present invention, the turntable has a first recessed cavity and a second recessed cavity with opposite positions inside. A first bearing is installed in the first recessed cavity, and a second bearing is installed in the second recessed cavity. The connecting shaft passes coaxially through the first bearing and the second bearing.

[0014] According to some embodiments of this utility model, the connecting shaft is provided with a first slot and a second slot. A first retaining ring is engaged in the first slot, and a second retaining ring is engaged in the second slot. The first bearing has a first side and a second side along the axial direction, and the second bearing has a third side and a fourth side along the axial direction. The second side and the fourth side are positioned opposite each other. The first side corresponding to the outer ring of the first bearing abuts against the first recess, the second side corresponding to the inner ring of the first bearing abuts against the first retaining ring, the third side corresponding to the outer ring of the second bearing abuts against the second recess, and the fourth side corresponding to the inner ring of the second bearing abuts against the second retaining ring.

[0015] According to some embodiments of the present invention, the connecting shaft is hollow inside, and a first through hole and a second through hole are provided on the side wall of the connecting shaft. The first through hole is located in the mounting cavity, and the second through hole is located outside the mounting cavity. The wire connected to the stator can pass through the first through hole, the inside of the connecting shaft, and the second through hole in sequence and extend to the outside of the connecting shaft.

[0016] According to some embodiments of the present invention, it also includes a lamp assembly, wherein both ends of the connecting shaft extend out of the mounting cavity, and the lamp assembly is mounted on one end of the connecting shaft.

[0017] According to some embodiments of the present invention, the connecting shaft is hollow inside and open at both ends, and the wires of the lamp assembly pass through the connecting shaft.

[0018] According to some embodiments of the present invention, the lamp assembly includes a lamp disk, the outer diameter of which is larger than the outer diameter of the turntable. When the fan blades are in the second position, each fan blade is located within the projection range of the lamp disk along the axial direction of the connecting shaft. When the fan blades are in the first position, each fan blade extends beyond the projection range of the lamp disk along the axial direction of the connecting shaft.

[0019] According to some embodiments of the present invention, a coil spring is provided between the fan blade and the turntable, and the coil spring applies an elastic force to the fan blade to rotate it to the second position.

[0020] According to some embodiments of the present invention, when the fan blade is in the second position, the fan blade is stacked on top of the turntable.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of a concealed fan;

[0024] Figure 2 This is a diagram illustrating another usage state of the invisible fan;

[0025] Figure 3 This is an exploded view of the invisible fan structure;

[0026] Figure 4 yes Figure 1 Internal structure diagram;

[0027] Figure 5 This is a schematic diagram of the internal structure of the turntable;

[0028] Figure 6 This is an assembly diagram of the connecting shaft and the stator.

[0029] Reference numerals: Connecting shaft 100; First slot 110; Second slot 120; First retaining ring 130; Second retaining ring 140; First through hole 150; Second through hole 160; Stator 200; Turntable 300; First housing 310; Second housing 320; Mounting cavity 330; First recessed cavity 331; Second recessed cavity 332; Magnetic ring 400; Fan blade 500; First bearing 610; First side 611; Second side 612; Second bearing 620; Third side 621; Fourth side 622; Lamp assembly 700; Lamp panel 710; Coil spring 800. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] This utility model relates to an invisible fan, including a connecting shaft 100, a stator 200, a turntable 300, a magnetic ring 400, and fan blades 500.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the stator 200 is fixedly mounted on the connecting shaft 100, and the stator 200 is an iron-core coil. A magnetic ring 400 is provided on the turntable 300, and the magnetic ring 400 is fixedly mounted relative to the turntable 300. The connecting shaft 100 passes through the turntable 300, and the turntable 300 and the connecting shaft 100 can rotate relative to each other. The magnetic ring 400 is arranged around the stator 200. Multiple fan blades 500 are mounted on the turntable 300, and each fan blade 500 is distributed sequentially around the central axis of the connecting shaft 100. The fan blades 500 can be rotatably connected to the turntable 300 via shafts, bolts, etc. After the stator 200 is energized, the turntable 300 rotates relative to the stator 200 through the magnetic ring 400. When the turntable 300 rotates, each fan blade 500, under centrifugal force, rotates relative to the turntable 300 in a direction away from the connecting shaft 100 to the first position. At this time, each fan blade 500 is in an unfolded state relative to the turntable 300. Then, the turntable 300 rotates synchronously relative to the connecting shaft 100 to achieve a blowing effect. Limiting structures such as limiting grooves and limiting ribs can be provided at the connection between the fan blades 500 and the turntable 300, ensuring that the fan blades 500 rotate to the first position at most when unfolded relative to the turntable 300. When the turntable 300 stops rotating, the fan blades 500 lose centrifugal force and can reset from the first position to the second position in a direction close to the rotation direction. At this time, each fan blade 500 retracts and hides on the turntable 300. The turntable 300 and the magnetic ring 400 cooperate to form a rotor, simplifying the traditional separate installation process between the motor and the blades. During operation, the connecting shaft 100 does not need to rotate, which can effectively prevent wear on the connecting shaft 100 and ensure the stability of the rotation of the turntable 300; the fan blades 500 can be folded and unfolded relative to the turntable 300, which can greatly reduce space occupation and reduce packaging and transportation costs when not in use or during transportation.

[0033] In one embodiment, such as Figure 3 , Figure 4 and Figure 5As shown, the turntable 300 includes a first housing 310 and a second housing 320. The first housing 310 and the second housing 320 are fixedly connected to each other by screws or the like. A mounting cavity 330 is defined between the first housing 310 and the second housing 320. An inverted bowl-shaped structure may be provided on the first housing 310, and the second housing 320 is installed below the first housing 310. A magnetic ring 400 is located in the mounting cavity 330 and fixed on the second housing 320. The first housing 310 and the second housing 320 cooperate to limit the radial and axial movement of the magnetic ring 400. A connecting shaft 100 is rotatably inserted through the first housing 310 and the second housing 320. Each fan blade 500 is rotatably mounted on the first housing 310.

[0034] Among them, such as Figure 4 and Figure 5 As shown, the turntable 300 has a first recessed cavity 331 and a second recessed cavity 332 inside. In the direction shown, the first recessed cavity 331 and the second recessed cavity 332 are located on the upper and lower sides of the mounting cavity 330, respectively, and their positions are opposite to each other. A first bearing 610 is installed in the first recessed cavity 331, and a second bearing 620 is installed in the second recessed cavity 332. A connecting shaft 100 is coaxially passed through the first bearing 610 and the second bearing 620. The connecting shaft 100 and the turntable 300 are rotatably connected through the first bearing 610 and the second bearing 620, which reduces rotational friction.

[0035] Furthermore, such as Figure 3 , Figure 4 and Figure 6As shown, the connecting shaft 100 is provided with a first retaining groove 110 and a second retaining groove 120. The first retaining groove 110 and the second retaining groove 120 are distributed vertically along the axial direction of the connecting shaft 100. The first retaining groove 110 and the second retaining groove 120 are both arranged around the connecting shaft 100. A first retaining ring 130 is engaged in the first retaining groove 110, and a second retaining ring 140 is engaged in the second retaining groove 120. The first bearing 610 has a first side 611 and a second side 612 along the axial direction. In the direction shown, the axial direction of the first bearing 610 is vertical, the upper side of the first bearing 610 is the first side 611, and the lower side is the second side 612. The second bearing 620 has a third side 621 and a fourth side 622 along the axial direction. In the direction shown, the axial direction of the second bearing 620 is vertical, the lower side of the second bearing 620 is the third side 621, and the upper side is the fourth side 622. The second side 612 and the fourth side 622 are positioned opposite each other. After the first bearing 610 is installed into the first recess 331 and the first retaining ring 130 is installed, the first side 611 (upper side) of the outer ring of the first bearing 610 abuts against the first recess 331, and the second side 612 (lower side) of the inner ring of the first bearing 610 abuts against the first retaining ring 130. After the second bearing 620 is installed into the second recess 332 and the second retaining ring 140 is installed, the third side 621 (lower side) of the outer ring of the second bearing 620 abuts against the second recess 332, and the fourth side 622 (upper side) of the inner ring of the second bearing 620 abuts against the second retaining ring 140. Using the cooperation of the first retaining ring 130, the second retaining ring 140, the first recess 331, and the second recess 332, the connecting shaft 100, the turntable 300, the first bearing 610, and the second bearing 620 are axially fixed together.

[0036] like Figure 4 and Figure 6 As shown, the interior of the connecting shaft 100 is hollow. A first through hole 150 and a second through hole 160 are provided on the side wall of the connecting shaft 100. The first through hole 150 is located in the mounting cavity 330, and the second through hole 160 is located outside the mounting cavity 330. Wires connected to the stator 200 can sequentially pass through the first through hole 150, the interior of the connecting shaft 100, and the second through hole 160 to extend to the exterior of the connecting shaft 100, thereby connecting the stator 200 to an external power source via wires.

[0037] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it also includes a lamp assembly 700. Both ends of the connecting shaft 100 extend outside the mounting cavity 330. The lamp assembly 700 is mounted on the lower end of the connecting shaft 100. The lamp assembly 700 does not rotate with the turntable 300. The lamp assembly 700 can provide illumination, increasing the functionality of the concealed fan. The connecting shaft 100 is hollow internally and open at both ends. The wires of the lamp assembly 700 pass through the connecting shaft 100 for wiring and connection to an external power source. Furthermore, the lamp assembly 700 includes a lamp disk 710. The light-emitting element of the lamp assembly 700 is mounted on the lamp disk 710, which may be circular. The outer diameter of the lamp disk 710 is larger than the outer diameter of the turntable 300. Viewed from below, the turntable 300 is hidden above the lamp disk 710. When the fan blades 500 are in the second position, each fan blade 500 is located within the projection range of the lamp panel 710 along the axial direction of the connecting shaft 100. That is, after each fan blade 500 is retracted relative to the turntable 300, each fan blade 500 is hidden above the lamp panel 710 and cannot be seen when viewed from below. When the fan blades 500 are in the first position, each fan blade 500 extends beyond the projection range of the lamp panel 710 along the axial direction of the connecting shaft 100, and the lamp panel 710 does not affect the downward airflow of the fan blades 500 as they rotate with the turntable 300.

[0038] In one embodiment, such as Figure 3 As shown, a coil spring 800 is provided between the fan blade 500 and the turntable 300. The coil spring 800 applies an elastic force to the fan blade 500, causing it to rotate to a second position. When the turntable 300 rotates, the fan blade 500 overcomes the elastic force of the coil spring 800 and rotates relative to the turntable 300 to a first position, while the coil spring 800 is in an elastic compression and torsion state. When the turntable 300 stops rotating, the fan blade 500 can return to the second position under the elastic force of the coil spring 800 and remain in the second position. When the fan blade 500 is in the second position, it is stacked on top of the turntable 300, thus concealing and protecting the fan blade 500 during transportation.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A concealed fan, characterized in that, include: A connecting shaft (100) on which a stator (200) is fixedly mounted; A turntable (300) is provided, on which a magnetic ring (400) is fixedly mounted. A connecting shaft (100) is rotatably mounted on the turntable (300), and the magnetic ring (400) is arranged around the stator (200). Fan blades (500), a plurality of said fan blades (500) are sequentially distributed around the central axis of said connecting shaft (100) and rotatably mounted on said turntable (300); wherein, When the turntable (300) rotates, the fan blade (500) can rotate relative to the turntable (300) in a direction away from the connecting shaft (100) to a first position; When the turntable (300) is not rotating, the fan blade (500) can be reset to the second position relative to the turntable (300) in a direction close to the connecting shaft (100).

2. The invisible fan according to claim 1, characterized in that: The turntable (300) includes a first housing (310) and a second housing (320) fixedly connected to each other. A mounting cavity (330) is defined between the first housing (310) and the second housing (320). The magnetic ring (400) is located in the mounting cavity (330) and fixed on the second housing (320). The connecting shaft (100) is rotatably inserted through the first housing (310) and the second housing (320). Each of the fan blades (500) is rotatably mounted on the first housing (310).

3. The invisible fan according to claim 1 or 2, characterized in that: The turntable (300) has a first recess (331) and a second recess (332) located opposite each other. A first bearing (610) is installed in the first recess (331), and a second bearing (620) is installed in the second recess (332). The connecting shaft (100) is coaxially inserted through the first bearing (610) and the second bearing (620).

4. The invisible fan according to claim 3, characterized in that: The connecting shaft (100) is provided with a first slot (110) and a second slot (120). A first retaining ring (130) is engaged in the first slot (110), and a second retaining ring (140) is engaged in the second slot (120). The first bearing (610) has a first side (611) and a second side (612) along the axial direction. The second bearing (620) has a third side (621) and a fourth side (622) along the axial direction. The positions of the second side (612) and the fourth side (622) are... Relatively speaking, the first side (611) corresponding to the outer ring of the first bearing (610) abuts against the first recess (331), the second side (612) corresponding to the inner ring of the first bearing (610) abuts against the first retaining ring (130), the third side (621) corresponding to the outer ring of the second bearing (620) abuts against the second recess (332), and the fourth side (622) corresponding to the inner ring of the second bearing (620) abuts against the second retaining ring (140).

5. The invisible fan according to claim 2, characterized in that: The connecting shaft (100) is hollow inside. The side wall of the connecting shaft (100) is provided with a first through hole (150) and a second through hole (160). The first through hole (150) is located in the mounting cavity (330), and the second through hole (160) is located outside the mounting cavity (330). The wire connected to the stator (200) can pass through the first through hole (150), the inside of the connecting shaft (100), and the second through hole (160) in sequence and extend to the outside of the connecting shaft (100).

6. The invisible fan according to claim 1, characterized in that: It also includes a lamp assembly (700), both ends of the connecting shaft (100) extending out of the mounting cavity (330), and the lamp assembly (700) is mounted on one end of the connecting shaft (100).

7. The invisible fan according to claim 6, characterized in that: The connecting shaft (100) is hollow inside and open at both ends, and the wires of the lamp assembly (700) are passed through the connecting shaft (100).

8. The invisible fan according to claim 6, characterized in that: The lamp assembly (700) includes a lamp disk (710) with an outer diameter larger than that of the turntable (300). When the fan blades (500) are in the second position, each fan blade (500) is located within the projection range of the lamp disk (710) along the axial direction of the connecting shaft (100). When the fan blades (500) are in the first position, each fan blade (500) extends beyond the projection range of the lamp disk (710) along the axial direction of the connecting shaft (100).

9. The invisible fan according to claim 1, characterized in that: A coil spring (800) is provided between the fan blade (500) and the turntable (300), and the coil spring (800) applies an elastic force to the fan blade (500) to rotate it to the second position.

10. The invisible fan according to claim 1 or 9, characterized in that: When the fan blade (500) is in the second position, the fan blade (500) is stacked on top of the turntable (300).

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