CN221647257U - Fan module and blowing device - Google Patents

Abstract

The application discloses a fan module and a blowing device, comprising: a housing; the connecting piece is arranged in the shell, the connecting piece and the shell are enclosed to form a plurality of air flow channels, and one end part of the connecting piece is abutted or provided with first bearings at intervals; the fan motor is sleeved on the connecting piece and the first bearing, and one end of a rotating shaft of the fan motor penetrates through the first bearing to be connected with the connecting piece; and the fan blade is connected with the other end of the rotating shaft. The first bearing is a metal product, has higher physical strength, and can provide stronger support for the fan motor. Simultaneously, the support strength of the first bearing is higher, the problem that the connecting piece is damaged and cracked due to overlarge acting force when the fan motor rotates at a high speed is avoided, and the service life of the fan module is prolonged.

Description

Fan module and blowing device

Technical Field

The present application relates to the field of fans, and in particular to a fan module and a blowing device.

Background Art

In the hot summer, fans have become a must-have item for people to get rid of the heat. With people's demand for convenient use, lighter and more portable fans are becoming more and more popular.

In the prior art, a fan is provided with a fan motor and fan blades, wherein the fan motor is fixed in a fan housing, and the fan motor is connected to the fan blades via a rotating shaft. When the fan motor rotates at high speed, the fan motor will exert a large force on the object connected to it. If the strength of the connected object is insufficient, the connected object will vibrate or be damaged and broken when the fan motor rotates at high speed.

Utility Model Content

The purpose of the present application is to provide a fan module and a blowing device that can balance the mass of fan blades and make the rotation of fan blades more stable.

The present application provides a fan module, including:

case;

A connecting member, the connecting member is arranged in the housing, and the connecting member and the housing enclose a plurality of airflow channels, and one end of the connecting member is abutted against or spaced apart from a first bearing;

A fan motor, wherein the fan motor is sleeved on the connecting member and the first bearing, and one end of the rotating shaft of the fan motor passes through the first bearing and is connected to the connecting member;

A fan blade is connected to the other end of the rotating shaft.

Optionally, the fan motor comprises: a coil and a magnetic ring, the magnetic ring is sleeved on the connecting member and the first bearing, the fan motor is sleeved on the magnetic ring, the magnetic ring is sleeved on the coil, and the fan blades are sleeved on the coil; or,

The fan motor includes: a coil, a magnetic ring and a motor housing, the coil is sleeved on the connecting piece and the first bearing, the magnetic ring is sleeved on the coil, the motor housing is sleeved on the magnetic ring, and the motor housing is fixedly connected to the rotating shaft so that the motor housing drives the rotating shaft to rotate.

Optionally, the coil is respectively interference-fitted with the connecting member and the first bearing, the magnetic ring is magnetically coupled to the coil, and the motor housing is interference-fitted with the rotating shaft; and/or,

A flexible sleeve is sleeved on the shell, and annular protrusions and dot-shaped protrusions are alternately arranged on the outside of the flexible sleeve.

Optionally, the connecting member includes: a connecting ring, a plurality of connecting plates and a connecting column, the plurality of connecting plates are arranged around the connecting ring, one end of each of the plurality of connecting plates is connected to the inner surface of the shell, the other end of each of the connecting plates is connected to the connecting ring, two adjacent connecting plates of the plurality of connecting plates are enclosed with the shell and the connecting ring to form an air duct, the connecting column is connected to a side of the connecting ring facing the fan motor, the connecting column is abutted against or spaced apart from the first bearing, the bearing passes through the first bearing and is connected to the connecting column, and the fan motor is sleeved on the connecting column and the first bearing; and/or,

The ratio of the inner diameter of the shell to the maximum diameter of the fan blade is in the range of 1.01-1.15.

Optionally, the end of each connecting plate facing the fan motor is bent and extended toward the fan motor to form an air guide plate, and the bending direction of the air guide plate is opposite to the rotation direction of the fan motor; and/or,

The connecting ring includes: a connecting outer ring and a connecting inner ring, the connecting inner ring is arranged inside the connecting outer ring, the connecting outer ring is connected to the multiple connecting plates, one end of the connecting column is connected to the connecting inner ring, and the other end of the connecting column extends out of the connecting outer ring and is connected to the fan motor sleeve.

Optionally, the air guide plate is disposed between the fan motor and the housing, and the air guide plate is connected to the inner surface of the housing, and there is a gap between the air guide plate and the fan motor; and/or,

The connecting column is provided with a connecting hole which passes through the connecting column, the connecting hole is communicated with the connecting inner ring, a second bearing is arranged in the connecting inner ring and the connecting hole, and the rotating shaft passes through the connecting hole and is connected with the second bearing.

Optionally, an end of the connecting outer ring facing away from the fan motor is snap-connected with a PCB circuit board.

Optionally, a clamping plate and a support plate are provided at one end of the connecting outer ring facing away from the fan motor, the support plate is overlapped with the PCB circuit board, the clamping plate is clamped and connected with the PCB circuit board, and the support plate and the clamping plate are alternately arranged.

Optionally, a claw is provided on the clamping plate, and the support plate forms a supporting edge by changing the thickness, the position height of the supporting edge is lower than the position height of the claw, the claw and the supporting edge form a clamping space, and the PCB circuit board is arranged in the clamping space.

To achieve the purpose of the present application, an embodiment of the present application further provides a blowing device, which is assembled with a fan module described in any one of the above items.

The beneficial effects of the embodiments of the present application are as follows: a connecting piece is provided in the housing, a first bearing is provided at the end of the connecting piece in abutment with or at intervals, and the fan motor is sleeved on the connecting piece and the first bearing. Since the first bearing is a metal product, it has a higher physical strength and can provide stronger support for the fan motor. At the same time, the first bearing has a higher support strength, which avoids the problem of the connecting piece being damaged and broken due to excessive force when the fan motor rotates at high speed, thereby increasing the service life of the fan module. At the same time, the provision of the first bearing shortens the length of the connecting piece, and the shortened length shortens the torque of the connecting piece when it is subjected to force, so that it bears a greater force from the fan motor, making the rotation of the fan motor more stable and the air outlet efficiency higher.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

FIG1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application;

FIG2 is a schematic diagram of the exploded structure of a fan module according to a specific embodiment of the present application;

FIG3 is a cross-sectional schematic diagram of a fan module according to a specific embodiment of the present application;

FIG4 is a schematic diagram of the three-dimensional structure of a housing according to a specific embodiment of the present application;

FIG5 is a schematic diagram of the structure of the connection between the housing and the rotating shaft according to a specific embodiment of the present application;

FIG. 6 is a schematic diagram of the connection structure between a housing and a PCB circuit board according to a specific embodiment of the present application.

Description of the drawings: 1. Shell; 11. Air cavity; 2. Connecting piece; 21. Connecting plate; 22. Connecting ring; 221. Connecting outer ring; 221a. Snap-in plate; 221b. Support plate; 221c. Claw; 221d. Support baffle; 222. Connecting inner ring; 23. Connecting column; 24. Air guide plate; 25. Connecting hole; 3. Fan motor; 31. Rotating shaft; 311. Slot; 32. Coil; 33. Magnetic ring; 34. Motor housing; 35. First bearing; 36. Second bearing; 37. Retaining spring; 4. Fan blade; 5. Flexible sleeve; 51. Annular protrusion; 52. Dot-shaped protrusion; 6. PCB circuit board.

DETAILED DESCRIPTION

In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and/or" used in this specification includes any and all combinations of one or more related listed items.

Example 1

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic diagram of the overall structure of the fan module of this embodiment; and FIG. 2 is a schematic diagram of the exploded structure of the fan module of this embodiment.

As shown in Figures 1 and 2, a fan module comprises: a housing 1, a connector 2, a fan motor 3 and fan blades 4. The connector 2 is arranged in the housing 1, and the connector 2 and the housing 1 enclose a plurality of airflow channels, one end of the connector 2 is abutted against or spaced with a first bearing 35; the fan motor 3 is sleeved on the connector 2 and the first bearing 35, one end of the rotating shaft of the fan motor 3 passes through the first bearing 35 and is connected to the connector 2; the fan blades 4 are connected to the other end of the rotating shaft 31.

In the above embodiment, a connecting member 2 is provided in the housing 1, and a first bearing 35 is provided at the end of the connecting member 2 in contact with or at intervals, and the fan motor 3 is sleeved on the connecting member 2 and the first bearing 35. Since the first bearing 35 is made of metal, it has a higher physical strength and can provide stronger support for the fan motor 3. At the same time, the first bearing 35 has a higher support strength, which can avoid the problem of the connecting member 2 being damaged and broken due to excessive force when the fan motor 3 rotates at high speed, thereby improving the service life of the fan module. At the same time, the provision of the first bearing 35 shortens the length of the connecting member 2, and the shortened length shortens the torque of the connecting member 2 when it is subjected to force, so that it can withstand a greater force from the fan motor 3, making the rotation of the fan motor 3 more stable and the air outlet efficiency higher.

In this embodiment, the housing 1 is cylindrical, and a cylindrical air cavity 11 is provided inside the cylinder. However, the shape of the housing 1 is not limited thereto, and in some embodiments, the shape of the housing 1 can be a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes, depending on the specific application scenario.

In this embodiment, the housing 1 is provided with an air cavity 11 that runs through the upper and lower surfaces thereof, and the air cavity 11 is configured in a cylindrical shape. However, the shape of the air cavity 11 is not limited thereto, and in some embodiments, the shape of the air cavity 11 can be star-shaped, heart-shaped, racetrack-shaped, or polygonal, depending on the specific application scenario.

In some embodiments, a trumpet-shaped air guide cover or an air guide cover with a constricted opening is disposed in the housing 1 .

In some embodiments, the fan motor 3 includes: a coil 32 and a magnetic ring 33, the magnetic ring 33 is sleeved on the connecting member 2 and the first bearing 35, the fan motor 3 is sleeved on the magnetic ring 33, and the magnetic ring 33 is sleeved on the coil 32. In this embodiment, a accommodating cavity is provided on the fan blades 4, and the inner surface of the accommodating cavity is sleeved on the coil 32. When the fan motor 3 rotates, the coil 32 drives the magnetic ring 33 to rotate, and then the magnetic ring 33 drives the fan blades 4 to rotate. In this process, the rotating shaft 31 no longer provides driving force for the fan blades 4 like a traditional motor, but plays a role in stabilizing and fixing the fan blades 4. This rotation method can make the fan blades 4 rotate at a high speed and stably because the steering force area of the magnetic ring 33 acting on the fan blades 4 is larger and the inertia moment of the fan blades 4 is smaller.

Please refer to FIG. 3 , which is a cross-sectional schematic diagram of the fan module of this embodiment.

As shown in FIG3 , in some embodiments, the fan motor 3 includes: a coil 32, a magnetic ring 33 and a motor housing 34, the coil 32 is sleeved on the connecting member 2 and the first bearing 35, the magnetic ring 33 is sleeved on the coil 32, the motor housing 34 is sleeved on the magnetic ring 33, and the motor housing 34 is fixedly connected to the rotating shaft 31 so that the motor housing 34 drives the rotating shaft 31 to rotate. In this embodiment, the coil 32 drives the magnetic ring 33 to rotate, and the magnetic ring 33 drives the motor housing 34 to rotate synchronously when rotating, and then the motor housing 34 drives the rotating shaft 31 connected thereto to rotate. This connection mode and driving mode, because the steering force area of the magnetic ring 33 is larger, the magnetic coupling connection mode between the magnetic ring 33 and the coil 32 can make the magnetic ring 33 rotate faster and more stably, thereby making the fan motor 3 rotate faster and more stably. At the same time, due to the connection between the motor housing 34 and the rotating shaft 31, the rotational torque between the rotating shaft 31 and the fan blades 4 is smaller, and the rotational inertia resistance of the fan blades 4 is also smaller. When rotating at high speed, the fan blades 4 are not prone to jitter and resonance, making the rotation of the fan blades 4 more stable and the speed higher.

The coil 32 is respectively interference-fitted with the connector 2, the magnetic ring 33 is magnetically coupled to the coil 32, and the motor housing 34 is interference-fitted with the rotating shaft 31. During the rotation of the magnetic ring 33 and the coil 32, the magnetic ring 33 is in a suspended state for rotation, and is subjected to less physical friction than a traditional motor, so the speed of the fan motor 3 can be further increased.

In some embodiments, the connection method between the coil 32 and the connector 2 is not limited to interference fit. Depending on the specific application scenario, the connection method between the coil 32 and the connector 2 can also be (but not limited to): gluing, welding, riveting, screw connection and other fixing methods.

In some embodiments, the connection method between the motor housing 34 and the rotating shaft 31 is not limited to interference fit. Depending on the specific application scenario, the connection method between the motor housing 34 and the rotating shaft 31 can also be (but not limited to): gluing, welding, riveting, screw connection and other fixing methods.

The connecting member 2 includes: a connecting ring 22 and a plurality of connecting plates 21, wherein the plurality of connecting plates 21 are arranged around the connecting ring 22, one end of each of the plurality of connecting plates 21 is connected to the inner surface of the shell 1, and the other end of each of the connecting plates 21 is connected to the connecting ring 22, and two adjacent connecting plates 21 among the plurality of connecting plates 21 enclose each other to form an air duct.

The arrangement of the plurality of connection plates 21 enables the connection ring 22 to be suspended in the housing 1 , and every two connection plates 21 among the plurality of connection plates 21 enclose an air duct, allowing the airflow driven by the fan motor 3 to flow through the air duct.

In this embodiment, the number of the connecting plates 21 is 7. However, the number of the connecting plates 21 is not limited thereto, and according to different specific application scenarios, in some embodiments, the number of the connecting plates 21 can be 2, 3, 4, 5, 6, 8 or more.

In some embodiments, the connecting member 2 is a plate disposed inside the housing 1 , the shape of the plate is the same as the shape of the internal cavity of the housing 1 , and a plurality of holes for airflow are opened on the plate.

The connector 2 and the housing 1 are manufactured by an integrated molding process. However, the manufacturing process of the connector 2 and the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the connector 2 and the housing 1 can be processed and molded separately, and then assembled and connected by gluing, clamping, riveting or screwing.

Please refer to FIG. 4 and FIG. 5 , FIG. 4 is a schematic diagram of the three-dimensional structure of the shell of this embodiment; FIG. 5 is a schematic diagram of the structure of the connection between the shell and the rotating shaft of this embodiment.

As shown in FIGS. 4 and 5 , the connector 2 further includes a connecting column 23 . The connecting column 23 is connected to the side of the connecting ring 22 facing the fan motor 3 , the connecting column 23 is in contact with or spaced apart from the first bearing 35 , the bearing passes through the first bearing 35 and is connected to the connecting column 23 , and the fan motor 3 is sleeved on the connecting column 23 and the first bearing 35 .

The connecting column 23 is configured in a truncated cone shape, and the truncated cone structure can stop the coil 32, making it convenient to install and fix the coil 32. However, the shape of the connecting column 23 is not limited thereto. According to different specific application scenarios, in some embodiments, the connecting column 23 can be a stepped structure composed of two connected cylinders; or formed by a prism or cylindrical structure.

In some embodiments, the connector 2 only includes: a connecting column 23 and a plurality of connecting plates 21 , the plurality of connecting plates 21 are arranged around the connecting column 23 , and one end of the plurality of connecting plates 21 is connected to the inner surface of the shell 1 and the other end is connected to the connecting column 23 .

The connection column 23 and the connection ring 22 are manufactured by an integral casting process. However, the preparation method of the connection column 23 and the connection ring 22 is not limited thereto. In some embodiments, the connection column 23 and the connection ring 22 are separately manufactured and formed, and then connected by (but not limited to): screw connection, clamping, riveting, adhesive connection, etc.

In some embodiments, the end of each connecting plate 21 facing the fan motor 3 is bent and extended toward the fan motor 3 to form an air guide plate 24 , and the bending direction of the air guide plate 24 is opposite to the rotation direction of the fan motor 3 .

Specifically, each of the multiple connecting plates 21 is formed with an air guide plate 24 at the end facing the fan motor 3, and the bending direction of the air guide plate 24 is opposite to the rotation direction of the fan blade 4. In this embodiment, the bending direction of the air guide plate 24 is opposite to the rotation direction of the fan blade 4, which means that the bending direction of the air guide plate 24 is opposite to the rotation direction of the fan blade 4, and is not limited to the specific embodiment in which the bending direction of the air guide plate 24 is 180° to the rotation direction of the fan blade 4. In some embodiments, when the bending angle of the air guide plate 24 is an obtuse angle with the rotation direction of the fan blade 4, it is also within the opposite coverage defined in this embodiment.

The bending direction of the air guide plate 24 is opposite to the rotation direction of the fan blades 4. When the fan blades 4 rotate, the airflow will be driven to rotate in the same direction. At this time, the bending direction of the air guide plate 24 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the air guide plate 24. Since the directions are opposite, the angle between the airflow and the curved part of the air guide plate 24 is greater than 90 degrees. The airflow contacts the air guide plate 24 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the air guide plate 24. During the contact process at a larger angle, the air guide plate 24 has an obvious guiding effect on the airflow, with less energy loss, which greatly improves the air outlet efficiency.

The air guide plate 24 is disposed between the fan motor 3 and the housing 1 , and the air guide plate 24 is connected to the inner surface of the housing 1 , with a gap between the air guide plate 24 and the fan motor 3 .

Specifically, the air guide plate 24 is disposed between the fan motor 3 and the housing 1 , and a gap is provided between the air guide plate 24 and the fan motor 3 .

In some embodiments, the air guide plate 24 is disposed between the hub of the fan blade 4 and the housing 1 , and there is a gap between the air guide plate 24 and the hub.

The air guide plate 24 is arranged between the fan blades 4 and the housing 1, and there is a gap between the air guide plate 24 and the fan blades 4. The gap between the air guide plate 24 and the fan blades 4 is such that after the airflow contacts the air guide plate 24, part of the airflow flows to the air outlet along the guidance of the air guide plate 24, and the other part of the airflow flows to the next air guide plate 24 through the gap between the air guide plate 24 and the fan blades 4. The gap between the air guide plate 24 and the fan blades 4 provides a channel for the air pressure balance between the air guide plates 24, thereby avoiding the problem that the air pressure on both sides of the air guide plate 24 is inconsistent due to the complete closure of the air guide plate 24, thereby affecting the air outlet efficiency of the fan module.

In some embodiments, the connecting ring 22 includes: a connecting outer ring 221 and a connecting inner ring 222, the connecting inner ring 222 is arranged inside the connecting outer ring 221, the connecting outer ring 221 is connected to a plurality of connecting plates 21, one end of the connecting column 23 is connected to the connecting inner ring 222, and the other end of the connecting column 23 extends out of the connecting outer ring 221 and is sleeved and connected to the fan motor 3.

The thickness of the connecting outer ring 221 is greater than the thickness of the connecting inner ring 222, so that when the connecting inner ring 222 is set in the connecting outer ring 221, there is still spare space in the connecting outer ring 221, and the spare space can be used to set the assembly base, thereby improving the space utilization of the fan module.

The connecting post 23 is provided with a connecting hole 25 that penetrates the connecting post 23, and the connecting hole 25 is communicated with the connecting inner ring 222. The second bearing 36 is arranged in the connecting inner ring 222 and the connecting hole 25, and the rotating shaft 31 passes through the connecting hole 25 and is connected to the second bearing 36. The rotating shaft 31 is inserted into and passes through the first bearing 35 and the second bearing 36, and a clamping groove 311 is provided at one end of the rotating shaft 31 that passes through the second bearing 36, and a clamping spring 37 is connected to the clamping groove 311.

The arrangement of the first bearing 35 and the second bearing 36 can make the rotation of the rotating shaft 31 smoother. At the same time, the arrangement of the two rotating shafts 31 makes the linear rotation of the rotating shaft 31 more stable, and can make the rotation speed of the fan motor 3 faster. The arrangement of the clamping groove 311 and the clamping spring 37 can prevent the rotating shaft 31 from falling off from the first bearing 35 and the second bearing 36, thereby enhancing the stability and reliability of the connection of the rotating shaft 31.

The end of the connecting outer ring 221 facing away from the fan motor 3 is snap-connected with a PCB circuit board 6. The PCB circuit board 6 is snap-connected and set on the connecting outer ring 221. The PCB circuit board 6 is set on the connecting outer ring 221, which can prevent the PCB circuit board 6 from leaking out of the fan module and hindering the airflow in the fan module. Therefore, the setting method of the PCB circuit board 6 reduces the wind resistance inside the fan module and improves the air outlet efficiency of the fan module. The snap connection between the PCB circuit board 6 and the connecting outer ring 221 facilitates the disassembly and replacement of the PCB circuit board 6, thereby improving the maintenance efficiency. At the same time, the PCB circuit board 6 can also serve as a dust cover above the fan motor 3 or the rotating shaft 31 and the second bearing 36 to prevent external dust from entering the above components and affecting the normal use of the above components.

Please refer to FIG. 6 , which is a schematic diagram of the connection structure between the housing and the PCB circuit board in this embodiment.

As shown in Figure 6, a clamping plate 221a and a support plate 221b are provided at one end of the connecting outer ring 221 facing away from the fan motor 3. The support plate 221b overlaps with the PCB circuit board 6, and the clamping plate 221a is clamped and connected with the PCB circuit board 6. The support plate 221b and the clamping plate 221a are alternately arranged.

The supporting plates 221 b and the clamping plates 221 a are alternately arranged so that the supporting plates 221 b and the clamping plates 221 a have movable space, which facilitates the assembly of the PCB circuit board 6 .

In this embodiment, the number of support plates 221b is 3. However, the number of support plates 221b is not limited thereto, and according to different specific application scenarios, in some embodiments, the number of support plates 221b can be (not limited to): 2, 4, 5 or more.

In this embodiment, the number of the clamping plates 221a is 3. However, the number of the clamping plates 221a is not limited thereto, and according to different specific application scenarios, in some embodiments, the number of the clamping plates 221a can be (not limited to): 2, 4, 5 or more.

In some embodiments, a claw 221c is provided on the clamping plate 221a, and the support plate 221b forms a support edge 221d by changing the thickness. The position height of the support edge 221d is lower than the position height of the claw 221c. The claw 221c and the support edge 221d form a clamping space, and the PCB circuit board 6 is arranged in the clamping space.

The annular clamping space formed by the clamping claw 221c and the supporting stop edge 221d can clamp the PCB circuit board 6 to prevent the PCB circuit board 6 from shaking or vibrating when the fan motor 3 rotates, thereby improving the stability of the fan module and reducing the noise of the fan module.

In some embodiments, the clamping device on the clamping plate 221a is not limited to the claw 221c. Depending on the specific application scenario, the clamping plate 221a can be provided with (but not limited to): circular, elliptical, and runway-shaped protrusions serving as the clamping device.

In some embodiments, the manufacturing device on the support plate 221b is not limited to the support edge 221d formed by thickness variation. Depending on the specific application scenario, the support plate 221b can be provided with (not limited to): circular, elliptical, and runway-shaped protrusions acting as support devices.

In this embodiment, the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blade 4 is 1.01-1.15. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blade 4 defines the gap between the housing 1 and the maximum diameter of the fan blade 4. When the fan blade 4 rotates, it will generate centrifugal force on the airflow flowing through the fan blade 4. Under the action of the centrifugal force, the airflow will move laterally and collide with the inner wall of the housing 1, generating turbulence, thereby affecting the airflow field in the housing 1, resulting in a low air outlet efficiency of the fan module. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blade 4 is limited to 1.01-1.15, which limits the gap between the fan blade 4 and the housing 1, reduces the stroke of the lateral airflow under the action of the centrifugal force, and limits the speed of the airflow when it contacts the inner side surface of the housing 1 to a smaller priority range. Therefore, this ratio can reduce the energy loss when the airflow collides with the housing 1, reduce the probability of turbulence, and improve the stability of the airflow field. At the same time, since the ratio range of the inner diameter of the shell 1 and the maximum diameter of the fan blades 4 is limited to between 1.01 and 1.15, within this ratio range, the distance between the fan blades 4 and the shell 1 is small, which can have an excellent interception effect on the return airflow in the fan blades 4, preventing the cyclone generated by the return airflow from affecting the air intake of the fan blades 4, thereby improving the air intake efficiency of the fan module. The improvement in the air intake efficiency improves the overall air outlet efficiency of the fan module.

In some embodiments, a flexible sleeve 5 is sleeved on the housing 1, and an annular protrusion 51 and a dot-shaped protrusion 52 are alternately arranged on the outside of the flexible sleeve 5. The setting of the flexible sleeve 5 can increase the friction between the fan module and the external object or other matching structure, so that the connection stability of the fan module is stronger. At the same time, the setting of the flexible sleeve 5 can also effectively buffer the physical vibration generated when the fan module is working, so that the rotation of the fan module is more stable and the noise generated is smaller.

The flexible sleeve 5 is alternately provided with annular protrusions 51 and dot-shaped protrusions 52 on the outside. Specifically, in some embodiments, the annular protrusions 51 are provided at both ends of the flexible sleeve 5, and the dot-shaped protrusions 52 are provided between the two annular protrusions 51. Alternatively, the annular protrusions 51 are provided at both ends and the middle position of the flexible sleeve 5, and the dot-shaped protrusions 52 are provided between two adjacent annular protrusions 51. However, the alternating arrangement of the annular protrusions 51 and the dot-shaped protrusions 52 is not limited thereto, and the number of the annular protrusions 51 can be: 4, 5, 6 or more. The dot-shaped protrusions 52 can also be provided at one end or both ends of the flexible sleeve 5.

The alternating arrangement of the annular protrusions 51 and the dot-shaped protrusions 52 provides the annular protrusions 51 and the dot-shaped protrusions 52 with a larger deformation space, which facilitates the assembly of the fan module. At the same time, the enlargement of the deformation space can improve the buffering performance of the flexible sleeve 5.

It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination method should not be limited to the combination methods listed in this embodiment.

Example 2

A blowing device includes the fan module in Example 1, wherein the fan module serves as a core module component for assembling the blowing device.

It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, car fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers and other products that need to promote air circulation. The fan module in Example 1 is assembled inside the shell of the above products.

In the present embodiment, a connecting member 2 is arranged in the housing 1 of the blowing device, and a first bearing 35 is arranged at the end of the connecting member 2 in abutment with or at intervals, and the fan motor 3 is sleeved on the connecting member 2 and the first bearing 35. Since the first bearing 35 is made of metal, it has a higher physical strength and can provide stronger support for the fan motor 3. At the same time, the supporting strength of the first bearing 35 is higher, which can avoid the problem of the connecting member 2 being damaged and broken due to excessive force when the fan motor 3 rotates at high speed, thereby improving the service life of the fan module. At the same time, the provision of the first bearing 35 shortens the length of the connecting member 2, and the shortened length shortens the torque of the connecting member 2 when it is subjected to force, so that it bears a greater force from the fan motor 3, making the rotation of the fan motor 3 more stable and the air outlet efficiency higher.

It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not intended to be additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims (10)

1. A fan module, comprising:

A housing;

The connecting piece is arranged in the shell, the connecting piece and the shell are enclosed to form a plurality of air flow channels, and one end part of the connecting piece is abutted or provided with first bearings at intervals;

The fan motor is sleeved on the connecting piece and the first bearing, and one end of a rotating shaft of the fan motor penetrates through the first bearing to be connected with the connecting piece;

and the fan blade is connected with the other end of the rotating shaft.

2. The fan module of claim 1, wherein the fan motor comprises: the magnetic ring is sleeved on the connecting piece and the first bearing, the fan motor is sleeved on the magnetic ring, the magnetic ring is sleeved on the coil, and the fan blade is sleeved on the coil; or alternatively

The fan motor includes: the motor comprises a connecting piece, a first bearing, a connecting piece, a magnetic ring and a motor shell, wherein the connecting piece is sleeved with the first bearing, the magnetic ring is sleeved with the coil, the motor shell is sleeved with the magnetic ring, and the motor shell is fixedly connected with the rotating shaft, so that the motor shell drives the rotating shaft to rotate.

3. The fan module of claim 2, wherein the coil is in interference fit with the connector and the first bearing, the magnetic ring is magnetically coupled with the coil, and the motor housing is in interference fit with the shaft; and/or the number of the groups of groups,

The shell is sleeved with a flexible sleeve, and annular protrusions and dot-shaped protrusions are alternately arranged outside the flexible sleeve.

4. The fan module of claim 1, wherein the connector comprises: the fan motor comprises a connecting ring, a plurality of connecting plates and a connecting column, wherein the connecting plates are arranged around the connecting ring, one end of each connecting plate in the plurality of connecting plates is connected with the inner surface of the shell, the other end of each connecting plate is connected with the connecting ring, two adjacent connecting plates in the plurality of connecting plates are enclosed with the shell and the connecting ring to form an air channel, the connecting column is connected to one side of the connecting ring facing the fan motor, the connecting column is abutted to or arranged at intervals with a first bearing, the bearing passes through the first bearing and is connected with the connecting column, and the fan motor is sleeved on the connecting column and the first bearing; and/or the number of the groups of groups,

The ratio of the inner diameter of the shell to the maximum diameter of the fan blade is 1.01-1.15.

5. The fan module of claim 4, wherein an end of each of the connection plates facing the fan motor is bent and extended toward the fan motor to form an air deflector, and the bending direction of the air deflector is opposite to the rotation direction of the fan motor; and/or the number of the groups of groups,

The connecting ring includes: the connecting outer ring and the connecting inner ring are arranged in the connecting outer ring, the connecting outer ring is connected with the connecting plates, one end of the connecting column is connected with the connecting inner ring, and the other end of the connecting column extends out of the connecting outer ring and is sleeved with the fan motor to be connected.

6. The fan module of claim 5, wherein the air deflector is disposed between the fan motor and the housing, and the air deflector is coupled to an inner surface of the housing with a gap therebetween; and/or the number of the groups of groups,

The connecting column is provided with a connecting hole penetrating through the connecting column, the connecting hole is communicated with the connecting inner ring, second bearings are arranged in the connecting inner ring and the connecting hole, and the rotating shaft penetrates through the connecting hole to be connected with the second bearings.

7. The fan module of claim 5, wherein a PCB is connected to an end of the connecting outer ring facing away from the fan motor.

8. The fan module of claim 7, wherein one end of the connection outer ring facing away from the fan motor is provided with a clamping plate and a supporting plate, the supporting plate is overlapped with the PCB, the clamping plate is in clamping connection with the PCB, and the supporting plate and the clamping plate are alternately arranged.

9. The fan module of claim 8, wherein the clamping plate is provided with a claw, the supporting plate forms a supporting edge through thickness change, the position height of the supporting edge is lower than the position height of the claw, the claw and the supporting edge form a clamping space, and the PCB is arranged in the clamping space.

10. A blowing device, characterized in that the blowing device is assembled with a fan module according to any one of claims 1-9.