Outer rotor motor, fan component and air conditioner

Abstract

The utility model discloses an external rotor motor, a fan component and an air conditioner, the external rotor motor comprises a stator assembly, a rotor assembly and a supporting member, the stator assembly comprises a stator, and the stator is provided with a central hole; the rotor assembly comprises a rotor and a rotating shaft, the rotor rotatably covers the outer side of the stator and comprises an annular part and an end cover part, the annular part surrounds the circumferential side of the stator, the end cover part is arranged on the shaft side of the stator and connected with the annular part, and the rotating shaft is connected with the end cover part and penetrates through the center hole; the rotating shaft is in running fit with the stator through a bearing which is matched in the central hole and sleeves the rotating shaft; the supporting member is located between the end cover part and the surface of one side, facing the end cover part, of the stator, and comprises a first supporting member arranged on the end cover part and / or a second supporting member arranged on the stator. According to the external rotor motor provided by the embodiment of the utility model, the support member can be used for controlling the fit clearance between the rotor and the stator so as to reduce the damage risk of the bearing.

Description

Technical Field

[0001] The utility model relates to the field of air conditioners, in particular to an outer rotor motor, a fan component and an air conditioner. Background Art

[0002] As the functions of air conditioners increase, the size of air conditioner indoor units is getting larger and larger, and the space occupied is increasing, which affects the user experience. In the related art, air conditioner indoor units usually use outer rotor motors to drive the crossflow impeller to reduce the overall size of the air conditioner indoor units. However, under some extreme working conditions, such as being bumped during transportation or being impacted by external forces during use, the bearings of the outer rotor motors will be damaged due to the collision, affecting the normal operation of the air conditioner. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an outer rotor motor, wherein a support member can be used to control the matching clearance between the rotor and the stator to reduce the risk of bearing damage.

[0004] According to an external rotor motor of an embodiment of the utility model, the motor comprises: a stator assembly, the stator assembly comprises a stator, the stator has a center hole; a rotor assembly, the rotor assembly comprises a rotor and a rotating shaft, the rotor is rotatably covered on the outer side of the stator, and comprises an annular portion and an end cover portion, the annular portion surrounds the circumference of the stator, the end cover portion is arranged on the axial side of the stator and connected to the annular portion, the rotating shaft is connected to the end cover portion and passes through the center hole, the rotating shaft and the stator are rotatably matched through a bearing that is matched in the center hole and sleeved on the outside of the rotating shaft; a support member, the support member is located between the end cover portion and a side surface of the stator facing the end cover portion, and comprises a first support member arranged on the end cover portion and / or a second support member arranged on the stator.

[0005] According to the outer rotor motor of the embodiment of the utility model, a support member is provided between the end cover portion and the surface of the stator on one side facing the end cover portion, so that the support member can be used to control the fitting clearance between the rotor and the stator to support the force in the case of impact, thereby reducing or eliminating the impact force on the bearing, improving bearing damage, and improving the reliability of the outer rotor motor.

[0006] According to the outer rotor motor of some embodiments of the present invention, the support member includes a first cushion member, and the first cushion member is continuously arranged around the entire circumference of the rotating shaft.

[0007] According to the outer rotor motor of some embodiments of the present invention, the first gasket is formed into a continuous ring with a ring width smaller than the stator radius.

[0008] According to some embodiments of the outer rotor motor of the present invention, the first continuous ring-shaped gasket is composed of a plurality of concentric ring-shaped gaskets spaced radially along the rotating shaft.

[0009] According to some embodiments of the utility model, the outer rotor motor has a cross-section as a projection plane; wherein the support member includes a first support member provided on the end cover portion, the first support member is configured as the first cushion, and on the projection plane, the orthographic projection of the first cushion exceeds the orthographic projection range of the axial end face of the stator; or, the support member includes a second support member provided on the stator, the second support member is configured as the first cushion, and on the projection plane, the orthographic projection of the first cushion does not exceed the orthographic projection range of the axial end face of the stator.

[0010] According to the outer rotor motor of some embodiments of the present invention, the support member includes a second pad, and the second pad includes a plurality of sub-pads arranged at intervals along the circumference of the rotating shaft.

[0011] According to the outer rotor motor of some embodiments of the present invention, the plurality of sub-pads in the second pad are evenly spaced and distributed along the circumference of the rotating shaft.

[0012] According to the outer rotor motor of some embodiments of the present invention, with the cross section of the outer rotor motor as the projection plane, the orthographic projection of the sub-pad is formed into a sector shape with the axis of the rotating shaft as the center, and the outer arc length of the sector shape is more than twice the inner arc length.

[0013] According to some embodiments of the external rotor motor of the present invention, the support member includes a first support member arranged on the end cover portion, the first support member includes the sub-pad, the inner edge of at least one of the sub-pads in the first support member extends to the rotating shaft, and the outer edge extends to the outer peripheral edge of the end cover portion; and / or, the support member includes a second support member arranged on the stator, the second support member includes the sub-pad, the inner edge of at least one of the sub-pads in the second support member extends to the inner peripheral edge of the axial side end face of the stator, and the outer edge extends to the outer peripheral edge of the axial side end face of the stator.

[0014] According to the outer rotor motor of some embodiments of the present invention, the second gasket is formed into an intermittent ring shape with a ring width smaller than the stator radius.

[0015] According to the outer rotor motor of some embodiments of the present invention, the second gasket in the shape of an intermittent ring is a plurality of gaskets spaced radially along the rotating shaft.

[0016] According to the outer rotor motor of some embodiments of the present utility model, the circumferential positions of the plurality of sub-pads in at least two of the second pads along the rotating shaft correspond one to one; or, the circumferential positions of the plurality of sub-pads in at least two of the second pads along the rotating shaft are staggered respectively.

[0017] According to the external rotor motor of some embodiments of the utility model, the support member includes a first support member provided on the end cover portion, the first support member and the end cover portion are integrally formed or assembled together; and / or, the support member includes a second support member provided on the stator, the second support member and the stator are integrally formed or assembled together.

[0018] According to the external rotor motor of some embodiments of the present invention, the stator includes a bearing shoulder protruding into the center hole, the bearing includes a first limit bearing located on a side of the bearing shoulder close to the end cover portion, and a first buffer member is arranged between the first limit bearing and the bearing shoulder.

[0019] According to the outer rotor motor of some embodiments of the present invention, when the end cover and the stator are respectively attached to two sides of the support member, the first buffer member has a compression margin.

[0020] According to the outer rotor motor of some embodiments of the present invention, the bearing also includes a second limit bearing arranged on a side of the bearing shoulder away from the end cover portion, and a second buffer is provided between the second limit bearing and the bearing shoulder.

[0021] According to some embodiments of the utility model, in the outer rotor motor, at least one bearing includes an inner ring, an outer ring and balls arranged between the inner ring and the outer ring, the outer ring cooperates with the hole wall of the center hole, and the inner ring cooperates with the rotating shaft.

[0022] According to the outer rotor motor of some embodiments of the present invention, the stator assembly also includes a bottom cover, which is located on the side of the stator away from the end cover portion in the axial direction, the bottom cover is connected to the stator, and a third buffer is provided between the bottom cover and the annular portion.

[0023] According to the outer rotor motor of some embodiments of the present invention, the third buffer is a rubber sleeve, and the third buffer surrounds and is sleeved on the edge of the bottom cover.

[0024] The utility model also provides a fan component.

[0025] A fan component according to an embodiment of the utility model comprises a crossflow impeller and an outer rotor motor according to any one of the above embodiments, wherein the outer rotor motor is connected to one axial end of the crossflow impeller.

[0026] The utility model further provides an air conditioner.

[0027] An air conditioner according to an embodiment of the utility model includes a fan component according to any of the above embodiments.

[0028] The fan component, the air conditioner and the outer rotor motor have the same advantages as those of the prior art, which will not be described in detail here.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of an outer rotor motor according to an embodiment of the utility model;

[0031] Figure 2 yes Figure 1 A cross-sectional view of an outer rotor motor is shown;

[0032] Figure 3 is a schematic diagram of an outer rotor motor according to another embodiment of the utility model;

[0033] Figure 4 yes Figure 3 A cross-sectional view of an outer rotor motor is shown;

[0034] Figure 5 is a schematic diagram of a first cushion member according to an embodiment of the utility model;

[0035] Figure 6 is a schematic diagram of a first cushion member according to another embodiment of the utility model;

[0036] Figure 7 is a schematic diagram of a second cushion according to an embodiment of the utility model;

[0037] Figure 8 is a schematic diagram of a second cushion according to another embodiment of the utility model;

[0038] Fig. 9 is a schematic diagram of a second cushion according to another embodiment of the utility model;

[0039] Fig.10 is a schematic diagram of a second cushion according to another embodiment of the utility model;

[0040] Fig.11 is a schematic diagram of an outer rotor motor according to another embodiment of the utility model;

[0041] Fig.12 It is a schematic diagram of a fan component according to an embodiment of the utility model.

[0042] Reference numerals:

[0043] Fan parts 1000,

[0044] Outer rotor motor 100, crossflow impeller 200, support base 300,

[0045] Stator assembly 1, stator 11, center hole 111, bearing shoulder 112, bottom cover 12,

[0046] Rotor assembly 2, rotor 21, annular portion 211, end cover portion 212, rotating shaft 22,

[0047] Bearing 3, first limit bearing 31, second limit bearing 32,

[0048] Support member 4 , first support member 4 a , second support member 4 b , first cushion member 41 , second cushion member 42 , sub-cushion 421 , first buffer member 5 , second buffer member 6 , third buffer member 7 . DETAILED DESCRIPTION

[0049] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0050] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0051] Hereinafter, an outer rotor motor 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0052] like Figure 1-Figure 12As shown, the outer rotor motor 100 according to the embodiment of the utility model comprises: a stator assembly 1, a rotor assembly 2 and a support member 4, the stator assembly 1 comprises a stator 11, the stator 11 has a central hole 111; the rotor assembly 2 comprises a rotor 21 and a rotating shaft 22, the rotor 21 is rotatably covered on the outer side of the stator 11, and comprises an annular portion 211 and an end cover portion 212, the annular portion 211 surrounds the circumference of the stator 11, and the end cover portion 212 is arranged on the stator 1 1 and the annular portion 211, the rotating shaft 22 is connected to the end cover portion 212 and is penetrated through the center hole 111, and the rotating shaft 22 and the stator 11 are rotatably matched through a bearing 3 that is matched in the center hole 111 and sleeved on the outside of the rotating shaft 22; the support member 4 is located between the end cover portion 212 and a side surface of the stator 11 facing the end cover portion 212, and includes a first support member 4a provided on the end cover portion 212 and / or a second support member 4b provided on the stator 11.

[0053] Therefore, the support member 4 can be used to control the fitting clearance between the rotor 21 and the stator 11 to support the force in the event of impact, thereby reducing or eliminating the impact force on the bearing 3, improving the damage to the bearing 3, and improving the reliability of the outer rotor motor 100.

[0054] First, if Figure 1-Figure 4 As shown, the outer rotor motor 100 includes a stator assembly 1 and a rotor assembly 2. The stator assembly 1 includes a stator 11. The stator 11 is cylindrical and is provided with a central hole 111 that penetrates in the axial direction. The rotor assembly 2 includes a rotor 21 and a rotating shaft 22. The rotor 21 is sleeved on the outer side of the stator 11 and is rotatable relative to the stator 11. The rotor 21 includes an annular portion 211 and an end cover portion 212. The annular portion 211 is cylindrical and surrounds the circumference of the stator 11 and cooperates with the stator 11. The annular portion 211 may include a permanent magnet. When interacting with the electromagnetic coil (referred to as the stator coil) of the stator 11, the rotor 21 will start to rotate. The end cover portion 212 is provided on the axial side of the stator 11, and the end cover portion 212 is connected to the annular portion 211 along the circumferential direction to form a whole.

[0055] The rotating shaft 22 axially penetrates the end cover portion 212 and is connected to the end cover portion 212. One end of the rotating shaft 22 protrudes from the side of the end cover portion 212 facing the stator 11 and is suitable for being inserted into the center hole 111. A bearing 3, such as a deep groove ball bearing, is sleeved on the rotating shaft 22. The outer side of the bearing 3 is used to be supported on the inner circumferential wall of the center hole 111 so that the rotating shaft 22 and the stator 11 can be rotatably matched.

[0056] The outer rotor motor 100 further includes a support member 4, which is located between the end cover portion 212 and a surface of the stator 11 facing the end cover portion 212. Figure 1-Figure 2As shown, the support member 4 may include a first support member 4a, and the first support member 4a is connected to the side of the end cover portion 212 facing the stator 11; or Figure 3-Figure 4 As shown, the support member 4 may include a second support member 4b, which is connected to a side surface of the stator 11 facing the end cover portion 212; or, the support member 4 may include a first support member 4a and a second support member 4b, which is connected to a side of the end cover portion 212 facing the stator 11, and the second support member 4b is connected to a side surface of the stator 11 facing the end cover portion 212. The first support member 4a and the second support member 4b may be staggered or relatively arranged, and the present application does not impose any restrictions on this.

[0057] Exemplarily, the stator 11 may include a plastic package, which is used to insulate and separate the stator coil from the rotor 21 , and the support member 4 may be connected to the plastic package or cooperate with the plastic package to stop and limit.

[0058] It can be understood that when the rotor 21 and the stator 11 move toward each other under circumstances such as impact, when the support member 4 is provided on the rotor 21, it will be in a stop fit with the stator 11, and when the support member 4 is provided on the stator 11, it will be in a stop fit with the rotor 21. The support member 4 can support the force and control the fitting clearance between the rotor 21 and the stator 11 to reduce the relative movement between the inner ring and the outer ring of the bearing 3, so as to eliminate or reduce the impact on the bearing 3, thereby improving the damage to the bearing 3.

[0059] According to the outer rotor motor 100 of the embodiment of the utility model, a support member 4 is provided between the end cover portion 212 and a side surface of the stator 11 facing the end cover portion 212, so that the support member 4 can be used to control the fitting clearance between the rotor 21 and the stator 11, so as to reduce or eliminate the impact force on the bearing 3, improve the damage to the bearing 3, and improve the reliability of the outer rotor motor 100.

[0060] In some embodiments of the present invention, referring to Figure 4 As shown, the support member 4 includes a first cushion member 41, which is configured in an annular shape and is continuously arranged around the entire circumference of the rotating shaft 22, so that the first cushion member 41 can fully cooperate with the rotor 21 and the stator 11 along the circumferential direction. It should be noted that any of the first support member 4a and the second support member 4b can include the first cushion member 41. Through the above arrangement, the supporting effect of the support member 4 can be guaranteed, and the practicality of the support member 4 is improved.

[0061] In some embodiments of the present invention, referring to Figure 5As shown, the first cushion member 41 can be formed into a continuous ring whose ring width is smaller than the radius of the stator 11. It should be noted that the first cushion member 41 can be constructed as a circular ring or a polygonal ring, such as a quadrilateral, a pentagon, a hexagon, an octagon, etc., and the present application does not limit this. This is beneficial to saving materials, reducing costs, and reducing the overall weight of the outer rotor motor 100.

[0062] In some embodiments of the present invention, the continuous annular first gasket 41 is a plurality of concentric rings arranged along the radial direction of the rotating shaft 22. Figure 6 As shown, the first gasket 41 can be provided in plurality, and the plurality of first gaskets 41 are all configured as continuous rings, and the plurality of first gaskets 41 have the same shape and different sizes, so that the plurality of first gaskets 41 can be arranged in concentric rings at intervals along the radial direction of the rotating shaft 22. Preferably, the plurality of first gaskets 41 can be arranged evenly at intervals along the radial direction of the rotating shaft 22. Thus, the plurality of first gaskets 41 can be used for common support to improve the reliability of the outer rotor motor 100.

[0063] In some embodiments of the utility model, the cross-section of the outer rotor motor 100 is a projection plane; wherein the support member 4 includes a first support member 4a provided on the end cover portion 212, the first support member 4a is configured as a first cushion member 41, and on the projection plane, the orthographic projection of the first cushion member 41 exceeds the orthographic projection range of the axial end face of the stator 11; or, the support member 4 includes a second support member 4b provided on the stator 11, the second support member 4b is configured as the first cushion member 41, and on the projection plane, the orthographic projection of the first cushion member 41 does not exceed the orthographic projection range of the axial end face of the stator 11.

[0064] That is, the cross section of the outer rotor motor 100 can be set as the projection surface. Figure 1-Figure 2 As shown, the support member 4 includes a first support member 4a, which is arranged on the side of the end cover portion 212 facing the stator 11, and is configured as a first cushion member 41, the orthographic projection of which exceeds the orthographic projection range of the axial end face of the stator 11.

[0065] Specifically, on the projection plane, the inner peripheral edge of the first support member 4a can be arranged opposite to the center hole 111; or, the outer peripheral edge of the first support member 4a can be arranged radially outward of the stator 11; or, the inner peripheral edge of the first support member 4a can be arranged opposite to the center hole 111, and the outer peripheral edge of the first support member 4a can be arranged to extend radially outward of the stator 11, and the present application does not impose any restrictions on this.

[0066] Or, if Figure 3-Figure 4As shown, the support member 4 includes a second support member 4b, which is disposed on a side surface of the stator 11 facing the end cover 212, and is configured as a first cushion member 41. On the projection plane, the orthographic projection of the first cushion member 41 does not exceed the orthographic projection range of the axial end surface of the stator 11.

[0067] Specifically, on the projection plane, the first cushion 41 can be arranged to overlap with the orthographic projection range of the axial end face of the stator 11; or, the first cushion 41 can be arranged to overlap only partially with the axial end face of the stator 11, and the present application does not impose any limitation on this.

[0068] Through the above arrangement, the supporting effect of the first cushion member 41 can be ensured, and obstacles caused by the excessive size of the first cushion member 41 can be avoided, thereby improving the rationality of the outer rotor motor 100.

[0069] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the support member 4 includes a second cushion member 42, and the second cushion member 42 includes a plurality of sub-cushions 421, such as two, three or more, and the plurality of sub-cushions 421 are arranged at intervals along the circumference of the rotating shaft 22. It should be noted that any of the first support member 4a and the second support member 4b may include the second cushion member 42. Through the above arrangement, the second cushion member 42 can achieve uniform support, and is conducive to reducing the weight of the support member 4, thereby realizing a lightweight design of the outer rotor motor 100.

[0070] In some embodiments of the present invention, Figure 7 As shown, a plurality of sub-pads 421 in the second pad 42 can be arranged to be evenly spaced and distributed along the circumference of the rotating shaft 22. Thus, the supporting effect of the second pad 42 can be ensured, and the weight distribution of the outer rotor motor 100 can be even, which is conducive to improving the design rationality of the outer rotor motor 100.

[0071] Of course, the present application is not limited thereto, and the plurality of sub-pads 421 in the second pad 42 may be arranged at non-uniform intervals along the circumference of the rotating shaft 22 .

[0072] In some embodiments of the present invention, the cross section of the outer rotor motor 100 is used as the projection surface, and the orthographic projection of the sub-pad 421 is formed into a sector shape with the axis of the rotating shaft 22 as the center, and the outer arc length of the sector shape is more than twice the inner arc length.

[0073] For example, refer to Figure 7As shown, the cross section of the outer rotor motor 100 can be set as a projection surface, and the orthographic projection of the sub-pad 421 is formed into a sector shape with the axis of the rotating shaft 22 as the center, and the sector shape is a shape surrounded by an inner arc, an outer arc and two straight lines. Among them, the outer arc length of the sector shape can be set to be more than twice the inner arc length, such as twice, two and a half times or more. In this way, the sub-pad 421 can have a sufficient size, which is conducive to ensuring the supporting effect of the sub-pad 421 and improving the reliability of the outer rotor motor 100.

[0074] In some embodiments of the utility model, the support member 4 includes a first support member 4a provided on the end cover portion 212, the first support member 4a includes a sub-pad 421, the inner edge of at least one sub-pad 421 in the first support member 4a extends to the rotating shaft 22, and the outer edge extends to the outer peripheral edge of the end cover portion 212; and / or, the support member 4 includes a second support member 4b provided on the stator 11, the second support member 4b includes a sub-pad 421, the inner edge of at least one sub-pad 421 in the second support member 4b extends to the inner peripheral edge of the axial side end face of the stator 11, and the outer edge extends to the outer peripheral edge of the axial side end face of the stator 11.

[0075] For example, refer to Figure 1 and Figure 8 As shown, the support member 4 includes a first support member 4a, which is arranged on a side surface of the end cover portion 212 facing the stator 11, and the first support member 4a includes a sub-pad 421. The inner edge of at least one sub-pad 421 in the first support member 4a extends to the rotating shaft 22 and cooperates with the outer peripheral wall of the rotating shaft 22, and the outer edge extends to the outer peripheral edge of the end cover portion 212, so that the sub-pad 421 can fully support the side surface of the end cover portion 212 along the radial direction of the rotating shaft 22.

[0076] At the same time, refer to Figure 3 and Figure 7 As shown, the support member 4 also includes a second support member 4b, which is arranged on a side surface of the stator 11 facing the end cover portion 212, and the second support member 4b includes a sub-pad 421. The inner edge of at least one sub-pad 421 in the second support member 4b extends to the inner peripheral edge of the axial side end surface of the stator 11, and the outer edge extends to the outer peripheral edge of the axial side end surface of the stator 11, so that the sub-pad 421 can fully support the side surface of the stator 11 facing the end cover portion 212 along the radial direction of the rotating shaft 22.

[0077] Through the above arrangement, the supporting effect of the first support member 4 a and / or the second support member 4 b can be ensured, which is beneficial to improving the reliability of the outer rotor motor 100 .

[0078] In some embodiments of the present invention, the second cushion member 42 is formed into an intermittent ring whose ring width is smaller than the radius of the stator 11. Fig. 9As shown, the second pad 42 may include a plurality of sub-pads 421 , the plurality of sub-pads 421 being configured to have the same width dimension, and the plurality of sub-pads 421 being spaced apart and arranged along the circumference of the rotating shaft 22 and forming an intermittent ring shape.

[0079] Specifically, multiple sub-pads 421 of the same second pad 42 can be arranged evenly spaced apart along the circumference of the rotating shaft 22; or multiple sub-pads 421 of the same second pad 42 can be arranged unevenly spaced apart along the circumference of the rotating shaft 22, and the present application does not limit this. Through the above arrangement, the second pad 42 can be fully supported along the circumference, which is conducive to improving the stability of the outer rotor motor 100.

[0080] In some embodiments of the present invention, Fig.10 As shown, the second pad 42 configured as an intermittent ring can be provided in plurality, and the plurality of second pads 42 are arranged at intervals along the radial direction of the rotating shaft 22. Specifically, the plurality of second pads 42 can be arranged at uniform intervals along the radial direction of the rotating shaft 22; or, the plurality of second pads 42 can be arranged at uneven intervals along the radial direction of the rotating shaft 22, and the present application does not limit this. Through the above arrangement, the plurality of second pads 42 can be supported together along the radial direction of the rotating shaft 22, which is conducive to improving the stability of the outer rotor motor 100.

[0081] In some embodiments of the present invention, Fig.10 As shown, multiple sub-pads 421 in at least two second pads 42 may be arranged in one-to-one correspondence along the circumferential position of the rotating shaft 22. Through the above arrangement, the layout difficulty of the second pads 42 may be reduced, and the practicability of the outer rotor motor 100 may be improved.

[0082] In some embodiments of the present invention, the plurality of sub-pads 421 in at least two second pads 42 are staggered along the circumferential position of the rotating shaft 22, so that the plurality of sub-pads 421 in at least two second pads 42 can provide sufficient support from different circumferential positions, thereby facilitating improving the support effect of the second pads 42.

[0083] In some embodiments of the present invention, the support member 4 includes a first support member 4a provided on the end cover portion 212, and the first support member 4a and the end cover portion 212 are integrally formed or assembled together; and / or, the support member 4 includes a second support member 4b provided on the stator 11, and the second support member 4b and the stator 11 are integrally formed or assembled together.

[0084] For example, refer to Figure 1As shown, the support member 4 may include a first support member 4a, and the first support member 4a is located on the side of the end cover 212 facing the stator 11. The first support member 4a and the end cover 212 may be integrated; or the first support member 4 and the end cover 212 may be assembled and connected, such as gluing, screwing or clamping the first support member 4a on the end cover 212, which is not limited in the present application.

[0085] Meanwhile, the support member 4 includes a second support member 4b, which is connected to a side surface of the stator 11 facing the end cover portion 212. The second support member 4b and the stator 11 may be provided as an integral part; or the second support member 4b and the stator 11 may be provided to be assembled and connected, such as gluing or clamping the second support member 4b to the stator 11, which is not limited in the present application.

[0086] It can be understood that by setting the support member 4 as an integral part, the assembly difficulty of the outer rotor motor 100 can be reduced, and by setting the support member 4 as an assembly part, the fitting clearance between the rotor 21 and the stator 11 can be more easily adjusted, which is beneficial to improving the practicality of the outer rotor motor 100.

[0087] Furthermore, the support member 4 may include a second support member 4b, and the second support member 4b and the stator 11 may be integrally molded by BMC injection molding. Through the above arrangement, the support member 4 may be prevented from affecting the rotation of the rotor 21, and the assembly difficulty of the outer rotor motor 100 may be reduced, which is conducive to improving the practicality of the outer rotor motor 100.

[0088] In some embodiments of the present invention, the stator 11 includes a bearing shoulder 112 protruding into the center hole 111, the bearing 3 includes a first limit bearing 31 located on a side of the bearing shoulder 112 close to the end cover portion 212, and the first buffer member 5 is arranged between the first limit bearing 31 and the bearing shoulder 112.

[0089] For example, refer to Figure 1 As shown, the stator 11 includes a bearing shoulder 112, which is located in the middle of the center hole 111 along the axial direction and protrudes inward. The bearing 3 includes a first limit bearing 31, which is spaced apart on one side of the bearing shoulder 112 close to the end cover 212. At the same time, a first buffer 5 can be provided between the first limit bearing 31 and the bearing shoulder 112, and the first buffer 5 can be a corrugated gasket or other buffer structures with the same function.

[0090] In the specific working process, when the outer rotor motor 100 is impacted by external force, if the end cover 212 and the stator 11 move toward each other, the rotating shaft 22 can drive the first limit bearing 31 to move toward the direction close to the bearing shoulder 112, and the first buffer member 5 can be compressed to achieve buffering; when the rotating shaft 22 moves to the lower limit position, the support member 4 can cooperate with the rotor 21 and the stator 11 respectively. At this time, a certain gap is still maintained between the first limit bearing 31 and the bearing shoulder 112, which can avoid the rigid collision between the first limit bearing 31 and the bearing shoulder 112.

[0091] Through the above arrangement, the first limit bearing 31 can be protected to reduce damage to the first limit bearing 31 , thereby improving the reliability of the outer rotor motor 100 .

[0092] In some embodiments of the present invention, when the end cover 212 and the stator 11 are respectively attached to both sides of the support member 4, the first buffer member 5 has a compression margin. That is, the first buffer member 5 has not yet reached the ultimate compression state at this time, and has the ability to be further compressed, thereby avoiding the rigid contact between the bearing shoulder 112 and the first limit bearing 31, and protecting the first limit bearing 31.

[0093] Specifically, Figure 3 As shown, the distance between the first limit bearing 31 and the bearing shoulder 112 can be set to d1, and the movement stroke of the rotating shaft 22 when the end cover 212 and the stator 11 are respectively attached to the two sides of the support member 4 is set to d2, and the thickness of the first buffer member 5 after being fully compressed is set to d3 (not released in the figure), satisfying: d1-d3>d2.

[0094] It should be noted that when the support member 4 and the stator 11 are an integral part, the support member 4 cooperates with the end cover portion 212 , which means that the end cover portion 212 and the stator 11 are respectively attached to the two sides of the support member 4 , and so on.

[0095] Through the above arrangement, the rigid collision between the first limit bearing 31 and the fully compressed first buffer member 5 can be avoided, which is beneficial to protecting the first limit bearing 31 .

[0096] In some embodiments of the present invention, the bearing 3 further comprises a second limit bearing 32 disposed on a side of the bearing shoulder 112 away from the end cover portion 212 , and a second buffer member 6 is disposed between the second limit bearing 32 and the bearing shoulder 112 .

[0097] For example, refer to Figure 1As shown, the bearing 3 further includes a second limit bearing 32, which is spaced apart at a side of the bearing shoulder 112 away from the end cover 212. At the same time, a second buffer 6 may be provided between the second limit bearing 32 and the bearing shoulder 112, and the second buffer 6 may be a corrugated gasket or other buffer structures having the same function.

[0098] In the specific working process, when the outer rotor motor 100 is impacted by external force, if the end cover 212 and the stator 11 move away from each other, the rotating shaft 22 can drive the second limit bearing 32 to move in the direction close to the bearing shoulder 112, and the second buffer member 6 can be compressed to achieve buffering; when the rotating shaft 22 moves to the upper limit position, the support member 4 can cooperate with the rotor 21 and the stator 11 respectively. At this time, a certain gap is still maintained between the second limit bearing 32 and the bearing shoulder 112, which can avoid the rigid collision between the second limit bearing 32 and the bearing shoulder 112.

[0099] Through the above arrangement, the second limit bearing 32 can be protected to reduce damage to the second limit bearing 32 , thereby improving the reliability of the outer rotor motor 100 .

[0100] In some embodiments of the utility model, at least one bearing 3 includes an inner ring, an outer ring and a ball disposed between the inner ring and the outer ring, the outer ring cooperates with the hole wall of the center hole 111, and the inner ring cooperates with the outer peripheral wall of the rotating shaft 22. Among them, a bearing shoulder 112 can be provided to cooperate with the outer ring in a limited manner along the axial direction of the rotating shaft 22. Through the above arrangement, the rotating shaft 22 can stably rotate relative to the stator 11, which is conducive to improving the overall performance of the outer rotor motor 100.

[0101] In some embodiments of the present invention, the stator assembly 1 further includes a bottom cover 12 , which is located on the axial side of the stator 11 away from the end cover portion 212 , is connected to the stator 11 , and a third buffer member 7 is provided between the bottom cover 12 and the annular portion 211 .

[0102] For example, refer to Fig.11 As shown, the stator assembly 1 further includes a bottom cover 12, which is located on a side of the stator 11 away from the end cover portion 212 along the circumferential direction, the bottom cover 12 is connected to the stator 11 and is opposite to the end of the annular portion 211, and a third buffer 7 is provided between the bottom cover 12 and the annular portion 211. Specifically, the third buffer 7 can be connected to a side surface of the annular portion 211 facing the bottom cover 12; or, the third buffer 7 can be connected to a side surface of the bottom cover 12 facing the annular portion 211, and the present application does not limit this.

[0103] In a specific working process, when the rotor 21 and the stator 11 move toward each other, the third buffer 7 can be supported between the bottom cover 12 and the annular portion 211 to achieve buffering, thereby reducing the impact force on the bearing 3. In addition, the third buffer 7 can also be used to control the matching clearance between the rotor 21 and the stator 11 to further reduce the impact force on the bearing 3. This helps to improve the reliability of the outer rotor motor 100.

[0104] In some embodiments of the present invention, Fig.11 As shown, the third buffer 7 can be constructed as a rubber sleeve, the third buffer 7 surrounds and is sleeved on the edge of the bottom cover 12, and part of the third buffer 7 can extend to the bottom cover 12 and the annular portion 211, so as to separate the bottom cover 12 from the annular portion 211. Of course, the present application is not limited to this, and the material of the third buffer 7 can also be set to any one of plastic, rubber, nylon, PBT and other materials. Through the above arrangement, the installation stability of the third buffer 7 can be improved, which is conducive to improving the overall performance of the outer rotor motor 100.

[0105] The following is combined with Figure 3 and attached Figure 4 A specific embodiment of an outer rotor motor 100 of the utility model is described as follows:

[0106] like Figure 3-Figure 4 As shown, the outer rotor motor 100 includes a stator assembly 1 , a rotor assembly 2 and a support 4 .

[0107] The stator assembly 1 includes a stator 11, which has a center hole 111; the rotor assembly 2 includes a rotor 21 and a rotating shaft 22, the rotor 21 is rotatably covered on the outer side of the stator 11, and includes an annular portion 211 and an end cover portion 212, the annular portion 211 surrounds the circumference of the stator 11, the end cover portion 212 is arranged on the axial side of the stator 11 and is connected to the annular portion 211, the rotating shaft 22 is connected to the end cover portion 212 and is passed through the center hole 111, and the rotating shaft 22 and the stator 11 are rotatably matched through a bearing 3 that is matched in the center hole 111 and sleeved on the outside of the rotating shaft 22; the support member 4 is located between the end cover portion 212 and a side surface of the stator 11 facing the end cover portion 212, and includes a second support member 4b arranged on the stator 11.

[0108] The second supporting member 4 b includes a first cushion member 41 , and the first cushion member 41 is continuously disposed around the entire circumference of the rotating shaft 22 .

[0109] The support member 4 includes a second support member 4 b provided on the stator 11 . The second support member 4 b is configured as a first cushion member 41 . On the projection plane, the orthographic projection of the first cushion member 41 does not exceed the orthographic projection range of the axial end face of the stator 11 .

[0110] The second support 4 b and the stator 11 are integrally formed.

[0111] The stator 11 includes a bearing shoulder 112 protruding into the center hole 111, the bearing 3 includes a first limit bearing 313 located on a side of the bearing shoulder 112 close to the end cover 212, and a first buffer 5 is provided between the first limit bearing 313 and the bearing shoulder 112. The bearing 3 also includes a second limit bearing 323 located on a side of the bearing shoulder 112 away from the end cover 212, and a second buffer 6 is provided between the second limit bearing 323 and the bearing shoulder 112.

[0112] Among them, the distance between the first limit bearing 31 and the bearing shoulder 112 can be set to d1, and the movement stroke of the rotating shaft 22 when the end cover part 212 and the stator 11 are respectively attached to the two sides of the support member 4 is set to d2, and the thickness of the first buffer member 5 after being fully compressed is set to d3 (not released in the figure), satisfying: d1-d3>d2.

[0113] Meanwhile, the distance between the annular portion 211 and the bottom cover 12 can be set to d4, and the distance between the rotating shaft 21 and the bottom cover 12 can be set to d5, satisfying: d2>d4, d2>d5. Thus, the annular portion 211, the rotating shaft 21 and the bottom cover 12 can be prevented from colliding.

[0114] Therefore, the outer rotor motor 100 of the present invention has at least the following advantages:

[0115] 1. By providing a support member 4 between the end cover portion 212 and a surface of the stator 11 facing the end cover portion 212, the support member 4 can be used to control the matching clearance between the rotor 21 and the stator 11, so as to reduce or eliminate the impact force on the bearing 3, improve the damage of the bearing 3, and improve the reliability of the outer rotor motor 100;

[0116] 2. The designed dimensions d1-d5 can ensure that the first buffer member 5 will not be completely flattened, thereby ensuring that the ball of the first limit bearing 313 is not subjected to excessive impact force, and will not damage the raceways of the inner and outer rings of the bearing 3, and can avoid collision between the annular portion 211, the rotating shaft 21 and the bottom cover 12.

[0117] The utility model also provides a fan component 1000 .

[0118] like Fig.12 As shown, a fan component 1000 according to an embodiment of the utility model includes a crossflow fan wheel 200 and an outer rotor motor 100 according to any of the above embodiments, the outer rotor motor 100 is connected to one axial end of the crossflow fan wheel 200, the rotating shaft 22 is transmission-connected to the crossflow fan wheel 200, and the other axial end of the crossflow fan wheel 200 is rotatably supported on a support seat 300, so that the rotating shaft 22 can drive the crossflow fan wheel 200 to rotate synchronously.

[0119] It should be noted that a limiting surface may be provided on the support seat 300. When the rotating shaft 22 drives the crossflow impeller 200 to move in a direction away from the stator assembly 1, the crossflow impeller 200 may be limited on the support seat 300 to prevent the rotor assembly 2 and the stator assembly 1 from separating.

[0120] According to the fan component 1000 of the embodiment of the utility model, a support member 4 is provided between the end cover portion 212 and the side surface of the stator 11 facing the end cover portion 212, so that the support member 4 can be used to control the fitting clearance between the rotor 21 and the stator 11, so as to reduce or eliminate the impact force on the bearing 3, improve the damage of the bearing 3, improve the stability of the outer rotor motor 100, and ensure the reliability of the fan component 1000.

[0121] The utility model further provides an air conditioner.

[0122] The air conditioner according to the embodiment of the utility model comprises the fan component 1000 according to any one of the above embodiments.

[0123] According to the air conditioner of the embodiment of the utility model, a support member 4 is provided between the end cover portion 212 and the side surface of the stator 11 facing the end cover portion 212, so that the support member 4 can be used to control the fitting clearance between the rotor 21 and the stator 11, so as to reduce or eliminate the impact force on the bearing 3, improve the damage of the bearing 3, improve the stability of the outer rotor motor 100, ensure the reliability of the fan component 1000, and improve the overall performance of the air conditioner.

[0124] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0125] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0126] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0127] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0129] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An outer rotor motor, characterized in that: include: A stator assembly, the stator assembly comprising a stator, the stator having a central hole; A rotor assembly, the rotor assembly comprising a rotor and a rotating shaft, the rotor being rotatably covered on the outer side of the stator and comprising an annular portion and an end cover portion, the annular portion surrounding the circumference of the stator, the end cover portion being arranged on the shaft side of the stator and connected to the annular portion, the rotating shaft being connected to the end cover portion and passing through the center hole, the rotating shaft and the stator being rotatably matched through a bearing fitted in the center hole and sleeved on the outside of the rotating shaft; A support member is located between the end cover portion and a side surface of the stator facing the end cover portion, and includes a first support member provided on the end cover portion and / or a second support member provided on the stator.

2. The outer rotor motor according to claim 1, characterized in that: The support member includes a first cushion member, and the first cushion member is continuously arranged around the entire circumference of the rotating shaft.

3. The outer rotor motor according to claim 2, characterized in that: The first cushion member is formed in a continuous ring shape with a ring width smaller than a radius of the stator.

4. The outer rotor motor according to claim 3, characterized in that: The first continuous ring-shaped cushion member is composed of a plurality of concentric ring-shaped cushion members which are spaced apart radially along the rotating shaft.

5. The outer rotor motor according to claim 2, characterized in that: Taking the cross section of the outer rotor motor as the projection surface; Wherein, the support member comprises a first support member provided on the end cover portion, the first support member is configured as the first cushion member, and on the projection plane, the orthographic projection of the first cushion member exceeds the orthographic projection range of the axial end face of the stator; Alternatively, the support member includes a second support member provided on the stator, the second support member is configured as the first cushion member, and on the projection plane, the orthographic projection of the first cushion member does not exceed the orthographic projection range of the axial end face of the stator.

6. The outer rotor motor according to claim 1, characterized in that: The support member includes a second cushion member including a plurality of sub-pads spaced apart from each other along a circumferential direction of the rotating shaft.

7. The outer rotor motor according to claim 6, characterized in that: The plurality of sub-pads in the second pad are evenly spaced and distributed along the circumference of the rotating shaft.

8. The outer rotor motor according to claim 6, characterized in that: Taking the cross section of the outer rotor motor as the projection plane, the orthographic projection of the sub-pad forms a sector shape with the axis of the rotating shaft as the center, and the outer arc length of the sector shape is more than twice the inner arc length.

9. The outer rotor motor according to claim 6, characterized in that: The support member comprises a first support member provided on the end cover portion, the first support member comprises the sub-pad, and an inner edge of at least one of the sub-pads in the first support member extends to the rotating shaft, and an outer edge extends to an outer peripheral edge of the end cover portion; And / or, the support member includes a second support member arranged on the stator, the second support member includes the sub-pad, and the inner edge of at least one of the sub-pads in the second support member extends to the inner peripheral edge of the axial side end face of the stator, and the outer edge extends to the outer peripheral edge of the axial side end face of the stator.

10. The outer rotor motor according to claim 6, characterized in that: The second cushion member is formed in an intermittent ring shape with a ring width smaller than a radius of the stator.

11. The outer rotor motor according to claim 10, characterized in that: The second spacer of discontinuous ring shape is multiple and spaced apart in radial direction along the rotating shaft.

12. The outer rotor motor according to claim 11, characterized in that: The circumferential positions of the plurality of sub-pads in at least two of the second pads along the rotating shaft correspond one to one; or, the circumferential positions of the plurality of sub-pads in at least two of the second pads along the rotating shaft are staggered respectively.

13. The outer rotor motor according to claim 1, characterized in that: The support member includes a first support member provided on the end cover portion, the first support member and the end cover portion are integrally formed or assembled together; and / or, the support member includes a second support member provided on the stator, the second support member and the stator are integrally formed or assembled together.

14. The outer rotor motor according to any one of claims 1 to 13, characterized in that: The stator comprises a bearing shoulder protruding into the center hole, the bearing comprises a first limit bearing located on a side of the bearing shoulder close to the end cover portion, and a first buffer is arranged between the first limit bearing and the bearing shoulder.

15. The outer rotor motor according to claim 14, characterized in that: When the end cover and the stator are respectively attached to both sides of the support member, the first buffer member has a compression margin.

16. The outer rotor motor according to claim 14, characterized in that: The bearing further comprises a second limit bearing arranged on a side of the bearing shoulder away from the end cover portion, and a second buffer is arranged between the second limit bearing and the bearing shoulder.

17. The outer rotor motor according to claim 1, characterized in that: At least one of the bearings comprises an inner ring, an outer ring and balls arranged between the inner ring and the outer ring, the outer ring cooperates with the hole wall of the center hole, and the inner ring cooperates with the rotating shaft.

18. The outer rotor motor according to claim 1, characterized in that: The stator assembly further includes a bottom cover, which is located at a side of the stator in the axial direction away from the end cover portion, the bottom cover is connected to the stator, and a third buffer is provided between the bottom cover and the annular portion.

19. The outer rotor motor according to claim 18, characterized in that: The third buffer is a rubber sleeve, and the third buffer surrounds and is sleeved on the edge of the bottom cover.

20. A fan component, characterized in that: It comprises a crossflow wind wheel and an outer rotor motor according to any one of claims 1 to 19, wherein the outer rotor motor is connected to one axial end of the crossflow wind wheel.

21. An air conditioner, characterized in that: Comprising the fan component according to claim 20.

Images