Outer rotor motor, fan component and air conditioner

Abstract

The external rotor motor comprises a rotor assembly, a stator assembly and a first buffer member, the rotor assembly comprises a housing and a rotating shaft, the housing is provided with a first excitation member, the rotating shaft is arranged on the housing and rotates synchronously with the housing, and the housing is provided with an opening; the stator assembly comprises a bottom cover and a second excitation piece arranged on the bottom cover, the bottom cover directly faces the opening, the second excitation piece is sleeved with the first excitation piece, a center hole is formed in the second excitation piece, a matched bearing is arranged between the rotating shaft and the center hole, and a gap is formed between the bottom cover and the shell; the first buffering piece is arranged on the bottom cover, the position of the first buffering piece is adjustable, and the first buffering piece is provided with a working position at least partially located in the gap. According to the external rotor motor provided by the embodiment of the utility model, the first buffer member is supported between the housing and the bottom cover and can absorb impact so as to slow down the impact between the housing and the bottom cover, thereby reducing the impact force borne by the matching bearing.

Description

Technical Field

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

[0002] In the related art, an outer rotor motor includes a rotor assembly, a stator assembly and a matching bearing. Under some impact conditions, the rotor and the stator may collide and cause damage to the matching bearing. 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, a fan component and an air conditioner, wherein the first buffer member is supported between the outer shell and the bottom cover and can absorb the impact to slow down the collision between the outer shell and the bottom cover, thereby reducing the impact force borne by the mating bearing.

[0004] In a first aspect, an embodiment of the present application provides an external rotor motor, comprising: a rotor assembly, the rotor assembly comprising a shell and a rotating shaft, the shell being provided with a first excitation component, the rotating shaft being provided on the shell and rotating synchronously with the shell, and the shell being provided with an open opening; a stator assembly, the stator assembly comprising a bottom cover and a second excitation component provided on the bottom cover, the bottom cover being opposite to the open opening and the first excitation component being sleeved on the second excitation component, a center hole being provided in the second excitation component, a matching bearing being provided between the rotating shaft and the center hole, and a gap being formed between the bottom cover and the shell; a first buffer component, the first buffer component being provided on the bottom cover and having an adjustable position, the first buffer component having a working position at least partially located in the gap.

[0005] In the above technical solution, by setting the position of the first buffer to be adjustable and having a working position in the gap, the position of the first buffer is adjusted to meet the impact resistance requirements of the outer rotor motor. Under some impact conditions, the first buffer is supported between the outer shell and the bottom cover and can absorb the impact to slow down the impact between the outer shell and the bottom cover, thereby reducing the impact force borne by the mating bearing, reducing the damage to the mating bearing caused by the impact, which is beneficial to prolonging the service life of the mating bearing and improving the operating stability of the outer rotor motor.

[0006] In some embodiments of the present application, the first buffer member has a storage position, and at the storage position the first buffer member is spaced apart from the gap.

[0007] In some embodiments of the present application, the outer rotor motor further includes: a motion mechanism having a movable output end; a transmission mechanism, the transmission mechanism being connected between the output end and the first buffer member, and the first buffer member is driven to move through the transmission mechanism when the output end moves.

[0008] In some embodiments of the present application, a guide groove is provided on the bottom cover, and the first buffer member can slidably cooperate with the guide groove.

[0009] In some embodiments of the present application, the guide groove is arranged to extend along the radial direction of the outer rotor motor.

[0010] In some embodiments of the present application, the transmission mechanism includes: a turntable connected to the output end of the motion mechanism; a transmission rod, one end of which is hinged to the turntable and the other end is hinged to the first buffer.

[0011] In some embodiments of the present application, the outer rotor motor further includes a limiting structure for limiting the rotation angle of the turntable.

[0012] In some embodiments of the present application, the limiting structure includes: a limiting groove provided on the turntable, the limiting groove being an arc-shaped groove provided around the output end; and a limiting pin provided on the bottom cover, the limiting pin being fitted in the limiting groove.

[0013] In some embodiments of the present application, a receiving groove is provided on the second excitation component, and the receiving groove forms an assembly opening on the outer peripheral surface of the second excitation component; the motion mechanism and the transmission mechanism are located in the receiving groove, and the first buffer component is located in the receiving groove when in the storage position, and the first buffer component is assembled to the gap through the assembly opening when in the working position.

[0014] In some embodiments of the present application, the motion mechanism is a solenoid valve or a micromotor.

[0015] In some embodiments of the present application, there are at least two first buffer members which are spaced apart along the circumference of the shell, and each of the first buffer members is positionally adjustable.

[0016] In some embodiments of the present application, the stator assembly is provided with a shoulder portion extending into the center hole, and the mating bearing and the shoulder portion are axially arranged opposite to each other; the outer rotor motor also includes a second buffer member, which is arranged between the shoulder portion and the mating bearing and is configured to be compressibly deformable.

[0017] In a second aspect, an embodiment of the present application provides a fan component, including a driving wind wheel and an outer rotor motor according to the embodiment of the first aspect of the utility model, wherein the rotating shaft is connected to the driving wind wheel.

[0018] In the above technical solution, the use of the above outer rotor motor is beneficial to improving the stability of the fan components.

[0019] In a third aspect, an embodiment of the present application provides an air conditioner, comprising a fan component according to the embodiment of the second aspect of the utility model.

[0020] In the above technical solution, the use of the above fan component is beneficial to improving the working stability of the air conditioner.

[0021] 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

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of an outer rotor motor provided in some embodiments of the present application;

[0024] Figure 2 yes Figure 1 A cross-sectional view of an outer rotor motor is shown;

[0025] Figure 3 yes Figure 2 An enlarged view of section A is shown;

[0026] Figure 4 is a schematic diagram of a transmission mechanism and a first buffer member provided in some embodiments of the present application (working position);

[0027] Figure 5 is a schematic diagram of a transmission mechanism and a first buffer member provided in some embodiments of the present application (storage position);

[0028] Figure 6 is another schematic diagram of an outer rotor motor provided in some embodiments of the present application;

[0029] Figure 7 yes Figure 6 A cross-sectional view of an outer rotor motor is shown;

[0030] Figure 8 is another schematic diagram of an outer rotor motor provided in some embodiments of the present application;

[0031] Fig. 9 is a schematic diagram of a crossflow impeller and a motor installation structure provided in some embodiments of the present application;

[0032] Fig.10 yes Fig. 9 An exploded view of the crossflow impeller and motor mounting structure shown in FIG.

[0033] Fig.11It is a partial cross-sectional view of a fan component provided in some embodiments of the present application.

[0034] Reference numerals:

[0035] Fan component 200, driving wind wheel 101, support base 102, motor mounting structure 103, mounting base 1031, pressing plate 1032, chassis 104,

[0036] Outer rotor motor 100, gap 10,

[0037] Rotor assembly 1, housing 11, opening 111, shaft 12,

[0038] stator assembly 2, bottom cover 21, guide groove 211, second excitation member 22, center hole 221, receiving groove 222, assembly opening 223, shaft shoulder 23,

[0039] Matching bearing 3, first buffer 4,

[0040] Transmission mechanism 5, limiting structure 5a, turntable 51, transmission rod 52, limiting groove 53, limiting pin 54,

[0041] The second buffer member 6. DETAILED DESCRIPTION

[0042] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] 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.

[0044] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] Hereinafter, an outer rotor motor 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0046] like Figure 1-Figure 3 As shown, the outer rotor motor 100 according to the embodiment of the utility model includes a rotor assembly 1, a stator assembly 2 and a first buffer 4, the rotor assembly 1 includes a shell 11 and a rotating shaft 12, the shell 11 is provided with a first excitation member, the rotating shaft 12 is arranged on the shell 11 and rotates synchronously with the shell 11, and the shell 11 is provided with an open mouth 111; the stator assembly 2 includes a bottom cover 21 and a second excitation member 22 arranged on the bottom cover 21, the bottom cover 21 is opposite to the open mouth 111 and the first excitation member is sleeved on the second excitation member 22, a center hole 221 is provided in the second excitation member 22, a matching bearing 3 is provided between the rotating shaft 12 and the center hole 221, and a gap 10 is formed between the bottom cover 21 and the shell 11; the first buffer 4 is arranged on the bottom cover 21 and its position is adjustable, and the first buffer 4 has a working position at least partially located in the gap 10.

[0047] Thus, by setting the position of the first buffer 4 to be adjustable and having a working position at the gap 10, the position of the first buffer 4 is adjusted to meet the impact resistance requirements of the outer rotor motor 100, that is, the first buffer 4 can be moved to the working position or away from the working position according to the requirements of the outer rotor motor 100. When the outer rotor motor 100 needs to resist impact, at least part of the first buffer 4 is located in the gap 10, and the first buffer 4 is in the working position. Under some impact conditions (such as impact during transportation or falling), the first buffer 4 is supported between the housing 11 and the bottom cover 21 and can absorb the impact to slow down the impact between the housing 11 and the bottom cover 21, thereby reducing the impact force borne by the mating bearing 3 and reducing the damage to the mating bearing 3 due to the impact. For example, it can effectively avoid the damage of the mating bearing 3 under extreme impact, or the outer rotor motor 100 has a large noise or stops due to damage to the mating bearing 3, which is conducive to extending the service life of the mating bearing 3 and improving the operating stability of the outer rotor motor 100. Secondly, when the outer rotor motor 100 is used in the fan component 200, the first buffer member 4 can also play a certain buffering role when the fan component 200 rotates, which is beneficial to improve the stability of the movement of the corresponding components in the fan component 200 (such as the driving wind wheel 101 below).

[0048] For example, combined with Figure 2 and Figure 3The outer rotor motor 100 includes a rotor assembly 1 and a stator assembly 2. The rotor assembly 1 includes a housing 11 and a rotating shaft 12. A first excitation member is disposed in the housing 11. The rotating shaft 12 cooperates with the housing 11 to rotate synchronously. For example, the rotating shaft 12 is passed through the housing 11 and is fixedly connected to the housing 11, so that the rotating shaft 12 can drive the housing 11 to rotate synchronously, or the rotating shaft 12 can be directly fixed to the housing 11 so that the two rotate synchronously, which is not limited here. The stator assembly 2 includes a bottom cover 21 and a second excitation member 22 disposed on the bottom cover 21. The bottom cover 21 covers the open opening 111 and the first excitation member is covered on the second excitation member 22, that is, the housing 11 is covered on the second excitation member 22, so that the housing 11 can be used to protect the second excitation member 22.

[0049] The second excitation member 22 is formed with a center hole 221 penetrating on both sides, the rotating shaft 12 is arranged in the center hole 221, and a matching bearing 3, such as a deep groove ball bearing, is sleeved on the rotating shaft 12, and the outer side of the bearing is used to cooperate with the inner wall of the center hole 221, so as to facilitate the relative rotation of the rotating shaft 12 and the second excitation member 22. The housing 11 is located radially outside the second excitation member 22, and a gap 10 is formed between the axial end of the housing 11 facing the bottom cover 21 and the bottom cover 21.

[0050] The outer rotor motor 100 further includes a first buffer 4, which is arranged on the bottom cover 21 and is position-adjustable. The first buffer 4 has a working position. When the first buffer 4 moves to the working position, part of the first buffer 4 is located in the gap 10, that is, part of the first buffer 4 is located between the housing 11 and the bottom cover 21, so as to separate the housing 11 and the bottom cover 21 in the axial direction of the rotating shaft 12. Therefore, under some impact conditions, when the housing 11 or the bottom cover 21 moves in the axial direction, the two will not directly collide, that is, the first buffer 4 can limit the relative movement of the rotor assembly 1 and the stator assembly 2 in the axial direction of the rotating shaft 12, thereby reducing the impact force borne by the matching bearing 3, so as to extend the service life of the matching bearing 3.

[0051] Optionally, "first buffer 4" may refer to a structure or material that has a buffering and impact absorption function. For example, the first buffer 4 may be a corrugated gasket, a rubber ring, or a plastic part, a rubber part, such as a PA66 material part, which is not limited here. Secondly, the first buffer 4 may be further constructed into a compressible and deformable structure. The compressive deformation includes elastic deformation and rigid deformation, which is not limited here. In this way, the impact between the housing 11 and the bottom cover 21 can be absorbed by the deformation of the first buffer 4, thereby further reducing the impact force borne by the mating bearing 3, so as to extend the service life of the mating bearing 3, and the first buffer 4 may also play a certain buffering role when the fan component 200 rotates.

[0052] In the above technical solution, by setting the position of the first buffer 4 to be adjustable and having a working position at the gap 10, the position of the first buffer 4 is easily adjusted to meet the impact resistance requirements of the outer rotor motor 100. Under some impact conditions, the first buffer 4 is supported between the housing 11 and the bottom cover 21 and can absorb the impact to mitigate the impact between the housing 11 and the bottom cover 21, thereby reducing the impact force borne by the mating bearing 3, reducing the damage to the mating bearing 3 due to the impact, which is beneficial to prolonging the service life of the mating bearing 3 and improving the operating stability of the outer rotor motor 100.

[0053] Optionally, combined Figure 3 , a gap 10 is formed between the bottom cover 21 and the shell 11, the shortest distance between the bottom cover 21 and the shell 11 is d1 (which can be understood as the height corresponding to the gap 10), when in the working position, at least part of the first buffer 4 is located in the gap 10, and the thickness of at least the part of the first buffer 4 located in the gap 10 is d2, d1>d2. For example, in combination Figure 3 In the axial direction of the rotating shaft 12 , the thickness of the first buffer member 4 is uniform, the shortest distance d1 between the bottom cover 21 and the housing 11 is 1 mm, and the thickness d2 of the first buffer member 4 is 0.5 mm-0.8 mm.

[0054] In some embodiments of the present application, Figure 3-Figure 5 The first buffer 4 has a storage position, at which the first buffer 4 is spaced from the gap 10. Therefore, when the outer rotor motor 100 does not need to resist impact, the first buffer 4 can move to the storage position, which prevents the first buffer 4 from affecting the rotation of the housing 11 to a certain extent, thereby facilitating the normal operation of the outer rotor motor 100.

[0055] Optionally, the storage position of the first buffer member 4 can be located at one axial side or one radial side of the working position along the rotating shaft 12. Figure 3-Figure 5 The bottom cover 21 is arranged on one axial side of the second excitation member 22, the housing 11 is covered with the second excitation member 22, and there is a gap 10 between the housing 11 and the bottom cover 21, and the gap 10 is located on the radial outer side of the second excitation member 22. The first buffer member 4 is arranged on the bottom cover 21 and is adjustable in the radial direction of the rotating shaft 12, that is, the first buffer member 4 can move in the radial direction, and the first buffer member 4 has a working position at the gap 10, and the second buffer member 6 has a storage position on the radial inner side of the gap 10, such as the storage position is located between the housing 11 and the second excitation member 22 or in the second excitation member 22, or the second buffer member 6 has a storage position on the radial outer side of the gap 10, such as the storage position is located on the radial outer side of the housing 11, or the second buffer member 6 has a storage position on the axial side of the gap 10 away from the housing 11, such as the storage position is located in the bottom cover 21.

[0056] In some embodiments of the present application, Figure 3-Figure 5 The outer rotor motor 100 further includes a motion mechanism and a transmission mechanism 5. The motion mechanism has a movable output end. The transmission mechanism 5 is connected between the output end and the first buffer 4. When the output end moves, the first buffer 4 is driven to move through the transmission mechanism 5. Thus, the transmission mechanism 5 is driven to move through the output end of the motion mechanism to drive the first buffer 4 to move, so that the position of the first buffer 4 can be adjusted, that is, the first buffer 4 can enter or leave the working position through the motion mechanism and the transmission mechanism 5, so as to meet the impact resistance requirements of the outer rotor motor 100.

[0057] Optionally, the first buffer 4 also has a storage position, in which the first buffer 4 is spaced from the gap 10. Thus, the first buffer 4 can move between the working position and the storage position through the motion mechanism and the transmission mechanism 5 to meet the impact resistance requirements of the outer rotor motor 100.

[0058] In some embodiments of the present application, Figure 4 and Figure 5 The bottom cover 21 is provided with a guide groove 211, and the first buffer member 4 can slidably cooperate with the guide groove 211. Therefore, the groove wall of the guide groove 211 can slide and cooperate with the first buffer member 4 to guide the movement of the first buffer member 4, which is conducive to improving the movement accuracy of the first buffer member 4.

[0059] In some embodiments of the present application, Figure 3 and Figure 4 , the guide groove 211 is arranged to extend in the radial direction of the outer rotor motor 100. Thus, the design of the guide groove 211 is facilitated, and the guide groove 211 is facilitated to cooperate with the first buffer 4 to guide the buffer to move to the working position. Secondly, the guide groove 211 extending in the radial direction of the outer rotor motor 100 can have a shorter path, which is conducive to reducing the space occupied by the guide groove 211 and facilitating the compact arrangement of the outer rotor motor 100.

[0060] For example, combined with Figure 3-Figure 5The bottom cover 21 is provided with a guide groove 211, which extends in the radial direction of the outer rotor motor 100. One end of the guide groove 211 extends to the gap 10, and the other end extends to the radial inner side of the housing 11. The first buffer 4 is slidably matched with the groove wall of the guide groove 211. When the first buffer 4 moves to the gap 10, the first buffer 4 is in the working position, that is, the first buffer 4 is between the housing 11 and the bottom cover 21. When the first buffer 4 moves to the radial inner side of the housing 11, the first buffer 4 is in the storage position. The outer rotor motor 100 also includes a motion mechanism and a transmission mechanism 5. The transmission mechanism 5 is connected between the output end of the motion mechanism and the first buffer 4. The output end of the motion mechanism drives the transmission mechanism 5 to move, so as to drive the first buffer 4 to move between the working position and the storage position, so as to meet the impact resistance requirements of the outer rotor motor 100. When the outer rotor motor 100 needs anti-impact protection, the motion mechanism drives the transmission mechanism 5 to move, so as to drive the first buffer 4 to move to the working position. At this time, the first buffer 4 is located between the housing 11 and the bottom cover 21. The first buffer 4 can limit the movement of the housing 11 toward the bottom cover 21 and absorb the impact. When the outer rotor motor 100 does not need anti-impact protection, the motion mechanism drives the transmission mechanism 5 to move, so as to drive the first buffer 4 to move to the storage position. At this time, the first buffer 4 is located on the radial inner side of the housing 11. The first buffer 4 is spaced apart from the housing 11, which can avoid interference between the first buffer 4 and the housing 11, and facilitate the normal rotation of the housing 11.

[0061] In some embodiments of the present application, Figure 4 and Figure 5 The transmission mechanism 5 includes a rotating disk 51 and a transmission rod 52. The rotating disk 51 is connected to the output end of the motion mechanism; one end of the transmission rod 52 is hinged on the rotating disk 51, and the other end is hinged on the first buffer 4. Therefore, the output end of the motion mechanism can drive the rotating disk 51 to rotate to drive the transmission rod 52 to move, so that the transmission rod 52 drives the first buffer 4 to move, for example, the transmission rod 52 drives the first buffer 4 to move to the working position. Therefore, the output power of the motion mechanism is converted into the power to drive the first buffer 4 to move through the rotating disk 51 and the transmission rod 52, and the structure of the transmission mechanism 5 is simple, and the operation of the transmission mechanism 5 is reliable and stable.

[0062] For example, combined with Figure 4 and Figure 5The turntable 51 is connected to the output end power of the motion mechanism, and the motion mechanism can drive the turntable 51 to rotate. One end of the transmission rod 52 is hinged to the turntable 51, and the other end of the transmission rod 52 is hinged to the first buffer 4. The first buffer 4 has a working position and a storage position. Therefore, when the motion mechanism drives the turntable 51 to rotate forward, the turntable 51 drives the transmission rod 52 to move to drive the first buffer 4 to move toward the working position. When the motion mechanism drives the turntable 51 to rotate reversely, the turntable 51 drives the transmission rod 52 to move to drive the first buffer 4 to move toward the storage position.

[0063] In some embodiments of the present application, Figure 4 and Figure 5 The outer rotor motor 100 further includes a limiting structure 5a for limiting the rotation angle of the turntable 51. Thus, the limiting structure 5a can limit the rotation angle of the turntable 51 to limit the distance that the transmission rod 52 drives the first buffer 4, so that the position of the first buffer 4 can be more accurately controlled, for example, the first buffer 4 moves to the working position or the storage position.

[0064] In some embodiments of the present application, Figure 4 and Figure 5 The limiting structure 5a includes a limiting groove 53 provided on the rotating disk 51 and a limiting pin 54 provided on the bottom cover 21. The limiting groove 53 is an arc groove provided around the output end; the limiting pin 54 is fitted in the limiting groove 53. Thus, the limiting pin 54 can cooperate with the limiting groove 53 to limit the rotation angle of the rotating disk 51, so that the first buffer member 4 can accurately move to the working position, and the structural design of the limiting structure 5a is simple, which is convenient for processing and production, and is conducive to reducing costs.

[0065] Optionally, the first buffer member 4 also has a storage position, and the limit pin 54 can cooperate with the opposite ends of the limit groove 53, so that the limit pin 54 can cooperate with the limit groove 53 to limit the rotation angle of the turntable 51, so that the first buffer member 4 can be accurately moved between the working position and the storage position.

[0066] In some embodiments of the present application, Figure 3, a receiving groove 222 is provided on the second excitation member 22, and the receiving groove 222 forms an assembly opening 223 on the outer peripheral surface of the second excitation member 22; the motion mechanism and the transmission mechanism 5 are located in the receiving groove 222, and the first buffer member 4 is located in the receiving groove 222 when in the storage position, and the first buffer member 4 is assembled to the gap 10 through the assembly opening 223 when in the working position. Therefore, the receiving groove 222 can accommodate the motion mechanism, the transmission mechanism 5 and the first buffer member 4, which can avoid the need to set up additional space for the outer rotor motor 100 to set up the motion mechanism, the transmission mechanism 5 and the first buffer member 4, making the outer rotor motor 100 more compact and conducive to reducing the volume of the outer rotor motor 100. Secondly, the first buffer member 4 is located in the receiving groove 222 when in the storage position, which can avoid the first buffer member 4 from interfering with some components of the outer rotor motor 100 (such as the housing 11), and the receiving groove can protect the motion mechanism, the transmission mechanism 5 and the first buffer member 4 from damage.

[0067] For example, combined with Figure 2-Figure 5 The bottom cover 21 is arranged on one axial side of the second excitation member 22, the housing 11 is covered with the second excitation member 22, and the open opening 111 of the housing 11 faces the bottom cover 21. A gap 10 is formed between the housing 11 and the bottom cover 21, and the gap 10 is located on the radial outer side of the second excitation member 22. The second excitation member 22 is formed with a receiving groove 222, and the receiving groove 222 forms an assembly opening 223 on the outer peripheral surface of the second excitation member 22, and the assembly opening 223 is located on the radial inner side of the gap 10. A guide groove 211 extending in the radial direction is formed on the bottom cover 21, one end of the guide groove 211 is located in the receiving groove 222, and the other end is located in the gap 10, and the guide groove 211 passes through the assembly opening 223. The first buffer 4 is arranged on the bottom cover 21 and slidably cooperates with the groove wall of the guide groove 211. The first buffer 4 has a working position and a storage position. The working position is located in the gap 10, and the storage position is located in the receiving groove 222.

[0068] The outer rotor motor 100 further includes a motion mechanism and a transmission mechanism 5. The transmission mechanism 5 includes a turntable 51 and a transmission rod 52. The turntable 51 is connected to the output end of the motion mechanism. One end of the transmission rod 52 is hinged to the turntable 51, and the other end is hinged to the first buffer 4. The turntable 51 is provided with a limit groove 53, which is an arc groove arranged around the output end. The chassis 104 is provided with a limit pin 54, which is fitted in the limit groove 53. The limit groove 53 and the limit pin 54 constitute a limit structure 5a to limit the rotation angle of the turntable 51. Thus, the output end of the motion mechanism drives the turntable 51 to rotate, the turntable 51 rotates to drive the transmission rod 52 to move, and the transmission rod 52 moves to drive the first buffer 4 to move along the guide groove 211, so as to realize the switching of the first buffer 4 between the working position and the storage position, thereby meeting the impact resistance requirements of the outer rotor motor 100.

[0069] In some embodiments of the present application, the motion mechanism is a solenoid valve or a micromotor, which is convenient for setting up the motion mechanism, and the motion mechanism has high precision, which is convenient for controlling the rotation angle of the turntable 51 and is beneficial to improving the position accuracy of the movement of the first buffer member 4.

[0070] In some embodiments of the present application, Figure 6 and Figure 8 There are at least two first buffer members 4 which are spaced apart along the circumference of the housing 11, and each first buffer member 4 is positionally adjustable. Thus, the plurality of first buffer members 4 are spaced apart along the circumference of the housing 11 and can all achieve a buffering effect, which can enhance the buffering effect of the first buffer members 4, thereby better reducing the impact on the mating bearing 3.

[0071] Optionally, the positions of the plurality of first buffer members 4 are adjusted synchronously, which is beneficial to improving the stability and reliability of the anti-shock of the outer rotor motor 100. For example, the plurality of first buffer members 4 are synchronously moved to the working position or the storage position.

[0072] In some embodiments of the present application, Figure 2 , the stator assembly 2 is provided with a shoulder portion 23 extending into the center hole 221, and the matching bearing 3 and the shoulder portion 23 are arranged opposite to each other in the axial direction; the outer rotor motor 100 also includes a second buffer 6, which is arranged between the shoulder portion 23 and the matching bearing 3 and is configured to be compressible and deformable. Thus, the shoulder portion 23 can limit the axial movement of the matching bearing 3 along the rotating shaft 12, that is, the shoulder portion 23 can limit the movement of the rotor assembly 1 relative to the stator assembly 2, thereby improving the matching stability of the rotor assembly 1 and the stator assembly 2. Secondly, the second buffer 6 is arranged between the shoulder portion 23 and the matching bearing 3 and the second buffer 6 is configured to be compressible and deformable, then the second buffer 6 can buffer the matching bearing 3, that is, the second buffer 6 can absorb the impact of the matching bearing 3 through compression deformation, which can reduce the impact force borne by the matching bearing 3, thereby reducing the damage to the matching bearing 3 caused by the impact, which is conducive to further extending the service life of the matching bearing 3.

[0073] For example, combined with Figure 2The stator assembly 2 includes a second excitation member 22 and a shaft shoulder 23. The second excitation member 22 has a central hole 221 extending in the axial direction. The shaft shoulder 23 is arranged in the middle of the central hole 221 in the axial direction and protrudes toward the central hole 221. The rotor assembly 1 includes a housing 11 and a rotating shaft 12. The housing 11 is connected to the rotating shaft 12. The rotating shaft 12 is passed through the central hole 221. Two matching bearings 3 are sleeved on the rotating shaft 12, and the two matching bearings 3 are arranged spaced apart in the axial direction of the rotating shaft 12. The two matching bearings 3 are respectively located on both sides of the shaft shoulder 23 in the axial direction of the rotating shaft 12, that is, one of the matching bearings 3 is arranged on the side of the shaft shoulder 23 away from the matching position of the housing 11 and the rotating shaft 12, and the other matching bearing 3 is arranged on the side of the shaft shoulder 23 close to the matching position of the housing 11 and the rotating shaft 12.

[0074] The outer rotor motor 100 further includes a first buffer member 4 , which is disposed on the bottom cover 21 and has an adjustable position, and has a working position at the gap 10 .

[0075] In the specific working process, combined with the figure, when the rotor assembly 1 moves in the direction away from the stator assembly 2 relative to the stator assembly 2, one of the above-mentioned matching bearings 3 can be limited and matched with the shaft shoulder 23 to prevent the rotor assembly 1 and the stator assembly 2 from being separated. When the rotor assembly 1 moves in the direction close to the stator assembly 2 relative to the stator assembly 2, the above-mentioned other matching bearing 3 can be limited and matched with the bearing shoulder to prevent the rotor assembly 1 and the stator assembly 2 from being attached and damaged; and / or, the first buffer 4 can be limited and matched with the housing 11 to prevent the rotor assembly 1 and the stator assembly 2 from being attached and damaged. At the same time, the first buffer 4 can absorb the impact of the housing 11 to reduce the impact between the housing 11 and the bottom cover 21, and can reduce the impact force borne by the above-mentioned other matching bearing 3.

[0076] In addition, the outer rotor motor 100 further includes a second buffer 6, and a second buffer 6 is provided between one of the mating bearings 3 and the shaft shoulder 23, and the second buffer 6 is configured to be compressibly deformed. In this way, when the outer rotor motor 100 is impacted and the rotor assembly 1 moves away from the stator assembly 2 relative to the stator assembly 2, the second buffer 6 can buffer one of the mating bearings 3, that is, the second buffer 6 can absorb the impact of one of the mating bearings 3 through compression deformation, and can reduce the impact force borne by one of the mating bearings 3. Thus, the reliability of the outer rotor motor 100 can be improved. Thus, the reliability of the outer rotor motor 100 can be improved.

[0077] Optionally, a second buffer 6 is provided between each matching bearing 3 and the shaft shoulder 23. For example, a second buffer 6 is also provided between the above-mentioned another matching bearing 3 and the shaft shoulder 23, so that when the outer rotor motor 100 is impacted and the rotor assembly 1 moves relative to the stator assembly 2 in a direction close to the stator assembly 2, the second buffer 6 can buffer the above-mentioned another matching bearing 3, that is, the second buffer 6 can absorb the impact of the above-mentioned another matching bearing 3 through compression deformation, which can further reduce the impact force borne by the above-mentioned another matching bearing 3.

[0078] Optionally, the matching bearing 3 includes a bearing inner ring, a bearing outer ring and balls, and there is a certain gap between the bearing inner ring and the bearing outer ring. By setting a second buffer member 6, a certain preload force can be applied to the matching bearing 3 to limit the axial displacement between the bearing inner ring and the bearing outer ring, thereby ensuring the stability of the bearing and, to a certain extent, avoiding damage to the bearing due to impact or the like, which may cause loud noise during the operation of the outer rotor motor 100.

[0079] In a second aspect, an embodiment of the present application provides a fan component 200 , including a driving wind wheel 101 and an outer rotor motor 100 according to the embodiment of the first aspect of the utility model, wherein a rotating shaft 12 is connected to the driving wind wheel 101 .

[0080] In the above technical solution, the use of the above outer rotor motor 100 is beneficial to improving the stability of the fan component 200 .

[0081] For example, combined with Figure 9-11 The fan component 200 also includes a support seat 102, a motor mounting structure 103 and a chassis 104. The support seat 102 and the motor mounting structure 103 are located on both sides of the axial direction of the driving wind wheel 101. The motor mounting structure 103 includes a mounting seat 1031 and a pressure plate 1032. The outer rotor motor 100 is arranged between the mounting seat 1031 and the pressure plate 1032 to ensure the stable installation of the outer rotor motor 100. The chassis 104 has a mounting cavity for accommodating the driving wind wheel 101. One axial end of the driving wind wheel 101 (for example, the wind wheel shaft) is rotatably supported on the support seat 102, and the other axial end of the driving wind wheel 101 is connected to the outer rotor motor 100, and the rotating shaft 12 is transmission-connected to the driving wind wheel 101, so that the rotating shaft 12 can drive the driving wind wheel 101 to rotate synchronously. In this way, the driving wheel 101 rotates to drive the air flow, and the air flows through the evaporator of the air conditioner (such as the fins of the evaporator). After the evaporator exchanges heat, it is blown to the room to cool or heat the room.

[0082] Optionally, the connection manner between the outer rotor motor 100 and the chassis 104 is not limited thereto. For example, the chassis 104 is formed with a receiving cavity, and the receiving cavity receives the outer rotor motor 100 .

[0083] It should be noted that the chassis 104 is the basic base of the air conditioner, and the chassis 104 is used to support or fasten the evaporator, driving impeller 101, outer rotor motor 100, electric control box, housing and other components of the air conditioner to ensure the stability of the overall structure of the air conditioner.

[0084] In a third aspect, an embodiment of the present application provides an air conditioner, comprising a fan component 200 according to the embodiment of the second aspect of the utility model.

[0085] In the above technical solution, the use of the above-mentioned fan component 200 is helpful to improve the working stability of the air conditioner.

[0086] In the description of the present utility model, it is necessary to understand that the terms "center", "thickness", "upper", "lower", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, 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, unless otherwise specified, "multiple" means two or more.

[0087] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] 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 rotor assembly, the rotor assembly comprising a housing and a rotating shaft, the housing is provided with a first excitation member, the rotating shaft is provided at the housing and rotates synchronously with the housing, and the housing is provided with an open opening; A stator assembly, the stator assembly comprising a bottom cover and a second excitation member arranged on the bottom cover, the bottom cover is directly opposite to the open opening and the first excitation member is covered on the second excitation member, a center hole is arranged in the second excitation member, a matching bearing is arranged between the rotating shaft and the center hole, and a gap is formed between the bottom cover and the housing; A first buffer member is disposed on the bottom cover and has an adjustable position, and the first buffer member has a working position at least partially located in the gap.

2. The outer rotor motor according to claim 1, characterized in that: The first buffer member has a storage position, and the first buffer member is spaced apart from the gap at the storage position.

3. The outer rotor motor according to claim 1, characterized in that: Also includes: A motion mechanism, wherein the motion mechanism has a movable output end; A transmission mechanism is connected between the output end and the first buffer, and when the output end moves, the first buffer is driven to move through the transmission mechanism.

4. The outer rotor motor according to claim 3, characterized in that: The bottom cover is provided with a guide groove, and the first buffer member can slidably match the guide groove.

5. The outer rotor motor according to claim 4, characterized in that: The guide groove is arranged to extend in a radial direction of the outer rotor motor.

6. The outer rotor motor according to claim 3, characterized in that: The transmission mechanism comprises: A rotating disk connected to the output end of the motion mechanism; A transmission rod, one end of which is hinged on the rotating disk, and the other end of which is hinged on the first buffer member.

7. The outer rotor motor according to claim 6, characterized in that: It also includes a limiting structure for limiting the rotation angle of the turntable.

8. The outer rotor motor according to claim 7, characterized in that: The limiting structure comprises: A limiting groove is provided on the rotating disk, wherein the limiting groove is an arc-shaped groove provided around the output end; A limiting pin is arranged on the bottom cover, and the limiting pin is matched in the limiting groove.

9. The outer rotor motor according to claim 3, characterized in that: The second excitation component is provided with a receiving groove, and the receiving groove forms an assembly opening on the outer peripheral surface of the second excitation component; The motion mechanism and the transmission mechanism are located in the accommodating groove, the first buffer is located in the accommodating groove when in the storage position, and the first buffer is assembled to the gap through the assembly opening when in the working position.

10. The outer rotor motor according to claim 3, characterized in that: The motion mechanism is a solenoid valve or a micro motor.

11. The outer rotor motor according to any one of claims 1 to 10, characterized in that: There are at least two first buffer members which are spaced apart along the circumference of the housing, and each of the first buffer members is positionally adjustable.

12. The outer rotor motor according to any one of claims 1 to 10, characterized in that: The stator assembly is provided with a shaft shoulder portion extending into the central hole, and the matching bearing and the shaft shoulder portion are arranged opposite to each other in the axial direction; The outer rotor motor further includes a second buffer member, which is disposed between the shaft shoulder portion and the mating bearing and is configured to be compressibly deformable.

13. A fan component, characterized in that: It comprises a driving wind wheel and an outer rotor motor according to any one of claims 1 to 12, wherein the rotating shaft is connected to the driving wind wheel.

14. An air conditioner, characterized in that: Comprising the fan component according to claim 13.

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