External rotor motors and fans

Abstract

The present invention belongs to the field of motor technology, and more specifically, relates to an outer rotor motor and a fan. The outer rotor motor includes a mounting base, a stator assembly, and a terminal block. The mounting base includes a mounting ear and a mounting barrel. The stator assembly includes a stator core and an insulating frame. The stator core is sleeved on the mounting barrel. There is an installation gap between the stator core and the mounting ear. The insulating frame covers the stator core. The insulating frame is provided with a clip that protrudes into the installation gap. The terminal block is provided in the installation gap. The terminal block is provided with a snap-fitting position that engages with the snap-fitting position. In this way, the snap-fitting position is provided by utilizing the installation gap for installing the terminal block inside the motor. The terminal block is snap-fitted to the insulating frame through the snap-fitting position. The installation operation of the terminal block is simple and the assembly efficiency is high. The terminal block is directly snapped to the insulating frame. The assembly stability of the terminal block and the insulating frame is higher, and the electrical performance of the outer rotor motor is more stable.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and more specifically, relates to an outer rotor motor and a fan. Background Art

[0002] Generally, an external rotor motor includes a mounting base, and a stator assembly, a rotor assembly and a terminal block installed on the mounting base. The stator assembly is located in the middle of the motor, the rotor assembly is located on the outside of the stator assembly, and the terminal block is connected to an external power supply through a power cord and supplies power to the motor.

[0003] In the related art, the terminal block is usually connected to the mounting base using connectors such as screws. The screw connection requires the introduction of additional connectors, which is cumbersome to operate, and it is difficult to effectively improve the motor assembly and production efficiency. Moreover, as the motor is used for a longer time, the screws and other connectors may become loose. The loose connectors cause the terminal block to loosen, resulting in poor electrical contact, affecting the overall electrical performance of the motor and reducing the reliability of the motor operation. Summary of the Invention

[0004] The main purpose of the embodiments of the present invention is to provide an outer rotor motor and a fan to solve the technical problems in the prior art that the terminal block of the outer rotor motor is connected to the mounting base using screws, etc., which has cumbersome connection operations, low assembly efficiency and low connection stability.

[0005] The technical solution adopted by the present invention is to provide an outer rotor motor, comprising:

[0006] The mounting seat includes a mounting ear portion and a mounting tube portion protruding from one side of the mounting ear portion;

[0007] The stator assembly includes a stator core and an insulating frame. The stator core is sleeved on the mounting tube. There is an installation gap between the stator core and the mounting ears. The insulating frame is covered on the stator core. The insulating frame is provided with a clip protruding into the installation gap.

[0008] The terminal board is arranged in the installation gap, and the terminal board is provided with a clamping position. The terminal board is buckled to the insulating frame through the clamping position and the buckle.

[0009] In some embodiments, the insulating frame is provided with a first through hole for the mounting cylinder to pass through, and the terminal board is provided with a second through hole for the mounting cylinder to pass through. The clip is provided on the end face of the insulating frame facing the mounting ear and is located at the edge of the first through hole, and the clamp is provided at the edge of the second through hole.

[0010] In some embodiments, the buckle includes an elastic arm and a barb provided at the free end of the elastic arm, the locking position is a through slot provided on the wiring board, and the barb passes through the through slot and is hooked on the wiring board.

[0011] In some embodiments, the mounting ear portion includes a plurality of connecting ears spaced apart along the circumference of the mounting cylinder portion, and the barb is located between two adjacent connecting ears.

[0012] In some embodiments, a receiving groove is recessed on the bottom of the mounting ear toward the wiring board, and the barb is inserted into the receiving groove.

[0013] In some embodiments, the through groove is connected to the second through hole, and the size of the portion where the through groove is connected to the second through hole is equal to the size of the elastic arm.

[0014] In some embodiments, the insulating frame is further provided with a limiting boss, and the end of the limiting boss facing the mounting ear abuts against the bottom surface of the terminal block facing away from the mounting ear.

[0015] In some embodiments, the insulating frame is provided with a plurality of buckles at intervals, and the limiting boss is provided at the edge of the opening of the first through hole and is located between two adjacent buckles.

[0016] In some embodiments, a positioning post is further provided on the edge of the opening of the first through hole, the positioning post is spaced apart from the buckle, and a positioning hole for the positioning post to be inserted is provided at a position corresponding to the positioning post on the wiring board.

[0017] In some embodiments, a clamping boss is provided on the outer peripheral wall of the end portion where the mounting cylinder is connected to the mounting ear portion, the terminal board is sleeved on the clamping boss, the stator core is sleeved on the end of the mounting cylinder portion where the clamping boss is not provided, and the end face of the stator core facing the mounting ear portion is abutted against the clamping boss.

[0018] In some embodiments, the stator core is bonded to the mounting cylinder by adhesive, and the outer peripheral wall of the mounting cylinder is provided with a groove for accommodating the adhesive.

[0019] In some embodiments, the insulating frame is an integral piece, and the insulating frame is integrally molded onto the stator core.

[0020] In some embodiments, the insulating frame includes an upper frame and a lower frame. Along the axial direction of the mounting cylinder, the upper frame is connected to one end of the stator core facing the mounting ear, and the lower frame is connected to the other end of the stator core facing away from the mounting ear. The clip is set on the upper frame, and a third through hole is provided at the position of the upper frame facing each barb. The third through hole passes through the upper frame along the axial direction of the first through hole, and the size of the third through hole is greater than or equal to the size of the barb.

[0021] The above one or more technical solutions in the outer rotor motor provided by the embodiment of the present invention have at least one of the following technical effects: the outer rotor motor of the present invention has a clamping position on the terminal board, and a buckle is set on the insulating frame by utilizing the installation gap of the terminal board installed inside the motor. The terminal board is buckled to the insulating frame through the clamping position and the buckle. When assembling the outer rotor motor, the terminal board is first buckled to the insulating frame, and then the stator assembly together with the terminal board is installed to the mounting seat. The installation operation of the terminal board is simple, the operability is strong, and the assembly efficiency is high; and the buckle is set by fully utilizing the space inside the motor for accommodating the terminal board. The setting of the buckle will not lead to an increase in the axial size of the motor, which meets the demand for miniaturization development of outer rotor motors; in addition, compared with connection through connecting parts such as screws, the terminal board is connected through the buckle structure, and the terminal board will not become loose due to loosening of the connecting parts. The assembly stability of the terminal board is higher, and poor electrical contact caused by loosening and shaking of the terminal board can be avoided, thereby helping to improve the overall performance of the outer rotor motor of the present application.

[0022] Another technical solution of the present invention is to provide a fan, comprising the above-mentioned outer rotor motor.

[0023] The beneficial effects of the fan provided by the embodiment of the present invention are: the fan of the present invention, by using the above-mentioned outer rotor motor, reduces the production cost of the fan, and the electrical performance of the fan is more stable and reliable, and the probability of electrical failure of the fan due to poor electrical contact of the outer rotor motor is reduced, the overall performance of the fan is improved, the maintenance frequency is reduced, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A cross-sectional structural diagram of an outer rotor motor provided in one embodiment of the present invention;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0027] Figure 3 for Figure 1 An exploded schematic diagram of an outer rotor motor is shown;

[0028] Figure 4 for Figure 1 An exploded schematic diagram of the stator assembly of the outer rotor motor shown;

[0029] Figure 5 for Figure 3 A cutaway view of the stator assembly shown when it is fastened to the connection terminal block;

[0030] Figure 6 for Figure 1 A schematic structural diagram of a terminal block of the outer rotor motor;

[0031] Figure 7 for Figure 1 A schematic structural diagram of a mounting base for an outer rotor motor is shown;

[0032] Figure 8 for Figure 1 A schematic structural diagram of an upper frame of an insulating frame of a stator assembly of an outer rotor motor is shown;

[0033] Figure 9 for Figure 8 a bottom view of the upper frame shown;

[0034] Figure 10 for Figure 1 A schematic structural diagram of the end cover assembly of the outer rotor motor shown;

[0035] Figure 11 for Figure 10 Exploded view of the end cap assembly shown.

[0036] In the figures, the main marks of the drawings are:

[0037] 10. Stator assembly; 11. Stator core; 111. First socket hole; 1111. First flat position; 112. Salient pole; 113. Salient pole tooth; 12. Insulation frame; 121. Upper frame; 1211. Third through hole; 122. Lower frame; 123. First through hole; 124. Positioning boss; 125. Positioning post; 13. Coil winding; 14. Snap-fit ​​structure; 141. Buckle; 1411. Elastic arm; 1412. Barb; 142. Positioning;

[0038] 20. Mounting seat; 21. Mounting ear; 211. First connecting ear; 212. Second connecting ear; 213. Third connecting ear; 214. Screw hole; 215. Third connecting hole; 22. Mounting cylinder; 221. First bearing chamber; 222. Second bearing chamber; 223. Through hole; 224. Snap-fit ​​boss; 2241. Block; 225. Second flat position; 226. Groove; 23. Mounting clearance;

[0039] 30. Wiring board; 31. Second through hole; 32. Positioning hole; 33. Bayonet;

[0040] 40. Power cord;

[0041] 50. End cap assembly; 51. Cover plate; 511. Cover plate portion; 5111. Opening; 5112. Second connecting hole; 5113. Avoidance opening; 5114. Stopper; 512. Side plate portion; 5121. Insertion port; 5122. Mounting hole; 52. Wire pressing plate; 521. Shielding portion; 5211. First connecting hole; 522. Pressing portion; 5221. Protrusion; 523. Insertion portion; 53. Wire outlet slot;

[0042] 60, rotating shaft; 601, supporting end; 602, output end; 61, bearing;

[0043] 70. Rotor assembly; 71. Rotor; 72. Magnet;

[0044] 100. Fasteners. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figures 1 to 11 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0049] References to "one embodiment," "some embodiments," or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present invention. The phrases "in one embodiment," "in some embodiments," "in other embodiments," "in yet other embodiments," etc., appearing in various places in this specification are not necessarily all referring to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically stated. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0050] In the related art, air conditioners are generally classified into several common types, such as mobile air conditioners, window air conditioners, and split air conditioners, depending on their installation method. Mobile air conditioners combine the indoor and outdoor units into one unit and can be moved according to usage needs. They generally offer advantages such as ease of installation, flexibility, and ease of use. They are typically used for emergency situations or to control the temperature in small spaces. During use, since mobile air conditioners are placed directly within the site of use, their overall size is limited. Generally, they cannot be set too large to prevent them from occupying too much space. Therefore, mobile air conditioners often use external rotor motors with relatively small structures and sizes as their power source.

[0051] However, conventional outer rotor motors, due to their strict requirements on size and safety, suffer from high costs and poor manufacturability. For example, during assembly, the terminal block of a conventional outer rotor motor must be connected to the mounting base using screws. This screw connection requires the introduction of additional connectors, making motor assembly cumbersome and difficult to effectively improve motor assembly and production efficiency, hindering cost control. Furthermore, over the life of the motor, screws may become loose, and loose connectors may cause the terminal block to loosen, resulting in poor electrical contact of the motor output wires, affecting the overall electrical performance of the motor and making it impossible to effectively guarantee the motor's quality.

[0052] Based on this, embodiments of the present invention provide an outer rotor motor that eliminates the need for additional connectors and utilizes the motor's inherent structure to achieve terminal block installation and connection, thereby improving motor assembly efficiency, increasing production efficiency, and reducing manufacturing costs. The outer rotor motor of the present invention is described in detail below with reference to specific embodiments.

[0053] See also Figures 1 to 7 ,in, Figure 1 A cross-sectional structural diagram of an outer rotor motor provided in one embodiment of the present invention is shown. Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle, Figure 3 for Figure 1The exploded diagram of the outer rotor motor shown in Figure 4 for Figure 1 The exploded schematic diagram of the stator assembly of the outer rotor motor is shown. Figure 5 for Figure 3 The cross-sectional view of the stator assembly shown is when it is fastened to the connection terminal plate. Figure 6 for Figure 1 A schematic structural diagram of the terminal block of the outer rotor motor, Figure 7 for Figure 1 Schematic diagram of the structure of the mounting base of the outer rotor motor shown.

[0054] like Figures 1 to 7 As shown, the outer rotor motor provided by the embodiment of the present invention includes a mounting base 20, and a stator assembly 10 and a terminal block 30 mounted on the mounting base 20. Figure 1 、 Figure 3 and Figure 4 As shown, the stator assembly 10 includes a stator core 11, an insulating frame 12 and a coil winding 13. The stator core 11 is mounted on the mounting base 20, and the insulating frame 12 is covered on the stator core 11. Specifically, the stator core 11 is provided with a plurality of salient poles 112, and the insulating frame 12 covers each salient pole 112. The coil winding 13 is wound on each salient pole 112 covered by the insulating frame 12. Figure 3 The terminal block 30 is electrically connected to the coil winding 13, thereby supplying power to the coil winding 13. Figure 1 and Figure 5 shown.

[0055] Furthermore, the mounting seat 20 includes a mounting ear 21 and a mounting barrel 22. The mounting ear 21 provides a centralized mounting and connection area for some external structures such as external interfaces. The mounting barrel 22 protrudes from one side of the mounting ear 21 and extends away from the mounting ear 21. The stator core 11 is sleeved on the mounting barrel 22. A mounting gap 23 is formed between the mounting ear 21 and the stator core 11. Specifically, the end surface of the stator core 11 facing the mounting ear 21 is spaced apart from the mounting ear 21 to form the mounting gap 23. The terminal block 30 is disposed in the mounting gap 23. Specifically, the terminal block 30 is provided with a latch 142, and the insulating frame 12 is provided with a buckle 141 protruding into the mounting gap 23. The buckle 141 cooperates with the latch 142 to form a buckle structure 14, as shown in FIG. Figure 3 and Figure 4 As shown, the terminal block 30 is connected to the insulating frame 12 through the buckle structure 14. When installing the terminal block 30, the terminal block 30 is buckled to the insulating frame 12 accordingly. Figure 1 and Figure 2 In this embodiment, the terminal block 30 may be an electric control board provided with electric control components.

[0056] The outer rotor motor of the embodiment of the present invention is provided with a latching position 142 on the terminal block 30, and a buckle 141 is provided on the insulating frame 12 by utilizing the installation gap 23 for installing the terminal block 30 inside the motor. The latching position 142 cooperates with the buckle 141 to form a buckling structure 14 connecting the insulating frame 12 and the terminal block 30. When assembling the outer rotor motor of this embodiment, the terminal block 30 is first buckled to the insulating frame 12, and then the stator assembly 10 is installed together with the terminal block 30 to the mounting seat 20. The installation operation of the terminal block 30 is simple, the operability is strong, and the assembly efficiency is high. In addition, the buckle 141 is provided by fully utilizing the installation gap 23 for accommodating the terminal block 30 inside the motor. The provision of the buckle 141 will not lead to an increase in the axial dimension (the axial direction of the mounting cylinder 22) of the outer rotor motor of this embodiment, which meets the demand for miniaturization development of outer rotor motors. In addition, compared with connection through connectors such as screws, connecting the terminal block 30 through the snap-on structure 14 does not require the aid of additional external connectors such as screws. The installation of the terminal block 30 is not restricted by the supply of connectors and can be installed anywhere and at any time. There is also no situation where the terminal block 30 becomes loose due to loose connectors. The assembly stability of the terminal block 30 is higher, and poor electrical contact caused by loosening and shaking of the terminal block 30 can be avoided, thereby helping to improve the overall performance of the outer rotor motor of the present application.

[0057] In one embodiment of the present invention, Figure 1 、 Figure 3 、 Figure 6 and Figure 7 As shown, a first sleeve hole 111 is provided in the middle of the stator core 11 for the installation cylinder 22 to pass through, the insulating frame 12 is provided with a first through hole 123 for the installation cylinder 22 to pass through, and the terminal block 30 is provided with a second through hole 31 for the installation cylinder 22 to pass through. The terminal block 30 is sleeved on the installation cylinder 22 and is located between the mounting ear 21 and the stator core 11.

[0058] The aforementioned clip 141 is positioned at the edge of the opening of the first through-hole 123, that is, the clip 141 is located at the edge of the opening of the first socket hole 111 of the stator core 11. The clip 141 is positioned away from the mounting barrel 22 and the salient pole 112. The positioning of the clip 141 does not interfere with the winding of the coil winding 13, nor does it affect the socketing of the stator core 11 and the mounting barrel 22, nor does it affect the interconnection between other structures of the outer rotor motor of the present application. Correspondingly, the latch 142 is positioned at the edge of the opening of the second through-hole 31, away from the mounting barrel 22. In this way, the latch 142 is positioned adjacent to the opening of the terminal block 30 through which the mounting barrel 22 passes, and does not affect the installation of the various electrical components on the terminal block 30 or the wiring of the terminal block 30.

[0059] In one embodiment of the present invention, Figure 3 and Figure 4As shown, the buckle 141 includes an elastic arm 1411 and a barb 1412 provided at the free end of the elastic arm 1411. The elastic arm 141 protrudes axially along the mounting barrel 22, and the barb 1412 is disposed opposite the first through-hole 123 of the insulating frame 12. The latch 142 is a through-slot provided in the terminal block 30, extending axially through the terminal block 30 along the second through-hole 31. The barb 1412 of the buckle 141 passes through the through-slot and hooks onto the terminal block 30. Specifically, the barb 1412 can directly hook onto the surface of the terminal block 30 facing the mounting ear 21, i.e., the top surface of the terminal block 30. In this way, the top surface of the terminal block 30 forms a hooking surface for the barb 1412 to hook onto. When installing the terminal block 30, the through-slot is aligned with the buckle 141, and the terminal block 30 is pushed until the barb 1412 of the buckle 141 passes through the through-slot and hooks onto the top surface of the terminal block 30.

[0060] In some specific embodiments, Figure 1 、 Figure 2 and Figure 7 As shown, along the radial direction of the mounting barrel 22, the length dimension of the extension of the mounting ear 21 is smaller than the length dimension of the extension of the terminal block 30, and the barb 1412 is located on the side of the mounting ear 22, that is, the barb 1412 is arranged away from the mounting ear 21. In this way, the barb 1412 protruding relative to the terminal block 30 will not interfere with the mounting ear 21. In addition, since the mounting ear 21 has a certain thickness dimension along the axial direction of the mounting barrel 22, the barb 1412 is arranged in the space occupied by the thickness dimension, which can also avoid the axial dimension of the outer rotor motor of this embodiment from increasing.

[0061] In some other embodiments, a receiving groove (not shown) can also be provided at the bottom of the mounting ear 21 toward the terminal block 30, and the barb 1412 can be adapted to be inserted into the receiving groove. In this way, interference between the barb 1412 and the mounting ear 21 can be avoided, thereby avoiding an increase in the axial size of the outer rotor motor.

[0062] In some other embodiments, the mounting ear portion 21 includes a plurality of connecting ears spaced apart along the circumference of the mounting cylinder portion 22, and the barb 1412 is located between two adjacent connecting ears. In this way, the barb 1412 is inserted into the gap between the two adjacent connecting ears. The provision of the barb 1412 does not increase the axial size of the motor, nor does it increase the radial size of the motor. For example, in this embodiment, Figure 1 、 Figure 3 and Figure 7 As shown, the connecting ears may include a first connecting ear 211 , a second connecting ear 212 , a third connecting ear 213 , and the like.

[0063] In another embodiment of the present invention, Figure 4 、 Figure 5 and Figure 6As shown, the clip 141 is integrally formed with the insulating frame 12, that is, the material of the clip 141 is the same as that of the insulating frame 12, and the clip 141 as a whole has a certain elasticity. In this way, in order to prevent the hook 1412 from falling out of the through slot, the size of the through slot is set to be roughly equivalent to the size of the elastic arm 1411 of the clip 141, or slightly larger than the size of the elastic arm 1411 and slightly smaller than the size of the barb 1412. During installation, the barb 1412 is squeezed through the through slot to ensure that the barb 1412 can hook on the top surface of the terminal block 30. At the same time, the elastic arm 1411 is inserted into the through slot. The size of the two is set to be equivalent to prevent the terminal block 30 from shaking and affecting the electrical performance. Among them, the size of the elastic arm 1411 refers to the thickness of the elastic arm 1411 along the radial direction of the stator core 11.

[0064] In another embodiment of the present invention, Figure 4 、 Figure 5 and Figure 6 As shown, the through-slot of the above embodiment is specifically a barrel groove connected to the second through-hole 31 along the radial direction of the second through-hole 31, that is, the through-slot is a notch provided at the edge of the opening of the second through-hole 31, and the size of the portion where the through-slot is provided to connect to the second through-hole 31 is equal to the size of the elastic arm 1411. In this way, the elastic arm 1411 of the buckle 141 can be moved into the through-slot via the second through-hole 31, making the buckle connection operation more convenient. At the same time, by designing the dimensions of the through-slot, the elastic arm 1411, and the barb 1412, the buckle 141 and the latch 142 form a tighter buckle connection, further improving the connection stability of the terminal block 30. Among them, the size of the elastic arm 1411 also refers to the thickness of the elastic arm 1411 along the radial direction of the stator core 11.

[0065] It should be noted that, in this embodiment, the size of the portion where the through slot connects to the second through hole 31 is equal to the size of the elastic arm 1411, which is not limited to being completely equal, but means that the sizes of the two are basically equal within the allowable error range. Moreover, since the elastic arm 1411 has a certain elasticity, in actual design, the size of the portion where the through slot connects to the second through hole 31 can also be set to be slightly smaller than the size of the elastic arm 1411. When snapping the connection terminal block 30, the elastic arm 1411 can be used to squeeze and generate elastic deformation to snap into the through slot.

[0066] In another embodiment of the present invention, Figure 3 、 Figure 4 and Figure 5As shown, the insulating frame 12 is further provided with a limiting boss 124. The limiting boss 124 is provided along the axial direction of the mounting barrel 22 toward the terminal block 30. The axial extension length of the limiting boss 124 is less than the axial extension length of the buckle 141. When the buckle 141 is engaged with the locking position 142, the end of the limiting boss 124 facing away from the insulating frame 12 abuts against the bottom surface of the terminal block 30 facing away from the mounting ear 21. In this way, the terminal block 30 is clamped by the limiting boss 124 and the barb 1412 of the buckle 141. Figure 5 As shown, the axial movement of the terminal block 30 along the mounting ears 21 is restricted, ensuring a more stable and reliable connection between the terminal block 30 and the insulating frame 12. Furthermore, the provision of the limiting bosses 124 also serves to separate the insulating frame 12 from the terminal block 30, ensuring that the terminal block 30 is installed at a distance from the insulating frame 12, thereby preventing electrical components on the terminal block 30 from contacting the coil windings 13 and the like, which could cause a short circuit.

[0067] In this embodiment, if Figure 4 and Figure 6 As shown, a plurality of clips 141 are arranged at intervals on the edge of the opening of the first through hole 123 of the insulating frame 12, and a plurality of latches 142 are arranged on the edge of the opening of the second through hole 31 of the terminal block 30. When the terminal block 30 is installed, the plurality of clips 141 are correspondingly engaged with the plurality of latches 142 one by one, forming a multi-point connection between the terminal block 30 and the insulating frame 12, and the connection stability of the terminal block 30 is further improved.

[0068] Furthermore, the limiting boss 124 is also positioned at the edge of the opening of the first through hole 123 to prevent the limiting boss 124 from interfering with the placement of the coil winding 13. The limiting boss 124 is also positioned between two adjacent clips 141, avoiding the clips 141. Alternatively, in other embodiments, the clips 141 may be positioned at the end of the limiting boss 124 facing away from the insulating frame 12, and the length of the elastic arm 1411 of the clip 141 may be set to be substantially equivalent to the thickness of the terminal block 30. This also ensures a stable connection of the terminal block 30.

[0069] In another embodiment of the present invention, Figure 4 、 Figure 5 and Figure 6As shown, a positioning post 125 is further provided at the edge of the opening of the first through hole 123. The positioning post 125 is spaced apart from the latch 141 and projects along the axial direction of the mounting barrel 22 toward the terminal block 30. Positioning holes 32 for the positioning post 125 to fit into are provided at positions on the terminal block 30 corresponding to the positioning post 125. The positioning post 125 cooperates with the positioning hole 32 to determine the assembly position of the terminal block 30 and the insulating frame 12. Compared to the engagement of the latch 141 with the latch 142, the positioning post 125 can be inserted more smoothly into the positioning hole 32, thereby improving assembly accuracy and reducing the risk of damage to the latch 141 due to errors in assembly position.

[0070] In this embodiment, the positioning post 125 is protruded from the limiting boss 124 .

[0071] In this embodiment, only one pair of positioning posts 125 can be provided to cooperate with the positioning holes 32 for positioning. Alternatively, multiple sets of positioning posts 125 can be provided to cooperate with the positioning holes 32. In this case, the size of the positioning holes 32 can be set to be substantially equal to the size of the positioning posts 125. When the positioning posts 125 are inserted into the positioning holes 32, they can also limit the radial shaking of the terminal block 30, thereby improving the installation stability of the terminal block 30.

[0072] In another embodiment of the present invention, Figure 1 and Figure 7 As shown, the outer peripheral wall of the mounting cylinder 22 of the mounting seat 20 is radially protruded with a snap-fitting boss 224, which is provided at the end where the mounting cylinder 22 is connected to the mounting ear 21, and the terminal block 30 is sleeved on the snap-fitting boss 224. The stator core 11 is sleeved on the end of the mounting cylinder 22 where the snap-fitting boss 224 is not provided. The end surface of the stator core 11 facing the mounting ear 21 abuts against the step surface of the snap-fitting boss 224. The snap-fitting boss 224 assists in positioning the installation of the terminal block 30, and can also be used for axial positioning of the stator core 11 and the terminal block 30.

[0073] Furthermore, in this embodiment, Figure 2 、 Figure 3 and Figure 7As shown, the stator core 11 and the mounting cylinder 22 are sleeved with a gap therebetween, and an adhesive such as glue is filled in the gap to bond the stator core 11 and the mounting cylinder 22 together. The outer peripheral wall of the mounting cylinder 22 is radially recessed to form a groove 226, which is provided at the position where the stator core 11 is sleeved, and is used to accommodate excess adhesive. In this way, a gap can be left between the stator core 11 and the mounting cylinder 22, so that the assembly of the stator core 11 will not cause deformation of the mounting cylinder 22 and its internal structure due to extrusion; and, by bonding the stator core 11 and the mounting cylinder 22, the connection reliability between the two is improved, and the stator core 11 is prevented from shaking and generating vibration and noise due to the existence of the gap; and by providing the groove 226, when the stator core 11 is bonded to the mounting cylinder 22 by glue or the like, excess glue can flow to and be stored in the groove 226, without flowing to other locations to cause pollution or affect the installation and operation of other structures.

[0074] In this embodiment, the groove 226 may be an annular groove arranged around the mounting cylinder 22 to provide as large a storage space as possible for the adhesive.

[0075] It is understandable that in other embodiments, the above-mentioned groove 226 can also be provided on the step surface of the clamping boss 224 facing the stator core 11, that is, the step surface is recessed toward the mounting ear 21 along the axial direction of the mounting cylinder 22. At this time, the groove 226 can also serve to store the adhesive.

[0076] In another embodiment of the present invention, Figure 6 and Figure 7 As shown, the wall of the second through hole 31 is provided with a snap-on notch 33 for a snap-on engagement with a snap-on block 2241. The outer peripheral wall of the snap-on boss 224 is provided with a snap-on block 2241 projecting radially from the mounting barrel 22. The snap-on block 2241 and the snap-on notch 33 form a snap-on positioning structure for positioning the terminal block 30 during installation. It is understood that the positions of the snap-on block 2241 and the snap-on notch 33 can also be interchanged, i.e., the snap-on notch 33 can be provided on the outer peripheral wall of the boss, while the snap-on block 2241 can be provided on the wall of the second through hole 31.

[0077] In another embodiment of the present invention, the insulating frame 12 is a single piece (not shown), and the insulating frame 12 is integrally molded onto the stator core 11. This improves connectivity between the insulating frame 12 and the stator core 1111, eliminating the gap required for assembly. The connection between the insulating frame 12 and the stator core 11 is highly stable, preventing the terminal block 30 from shaking due to the shaking of the insulating frame 12 relative to the stator core 11. This further improves the installation stability of the terminal block 30. Furthermore, the absence of a gap between the insulating frame 12 and the stator core 11 further increases the slot fill rate of the slot line. Furthermore, when assembling the stator assembly 10, the step of assembling the insulating frame 12 to the stator core 11 is omitted, reducing labor and equipment costs.

[0078] In some other embodiments of the present invention, different from the above embodiments, the insulating frame 12 may also be a split piece. For example, the insulating frame 12 may include an upper frame 121 and a lower frame 122. Figures 3 to 5 ,as well as Figure 8 and Figure 9 ,in, Figure 8 for Figure 1 The schematic structural diagram of the upper frame 121 of the insulating frame 12 of the stator assembly 10 of the outer rotor motor is shown. Figure 9 for Figure 8 A bottom view of the upper frame 121 is shown.

[0079] In this embodiment, if Figures 3 to 5 As shown, along the axial direction of the stator core 11, the upper frame 121 is connected to one end of the stator core 11 facing the terminal block 30, and the lower frame 122 is connected to the other opposite end of the stator core 11. The upper frame 121 and the lower frame 122 are respectively connected to the stator core 11, thereby electrically isolating the stator core 11 from the coil winding 1315. The buckles 141 of the above embodiments are provided on the upper frame 121, and third through holes 1211 are provided at positions on the upper frame 121 opposite to the barbs 1412, as shown in FIG. Figure 8 and Figure 9 As shown, the third through hole 1211 passes through the upper frame 121 along the axial direction of the first through hole 123 , and the size of the third through hole 1211 is set to be greater than or equal to the size of the barb 1412 .

[0080] In this way, since the insulating frame 12 is integrally injection molded, it is necessary to form a buckle 141 with a barb 1412 when it is produced using a mold. Therefore, it is necessary to set a slide position in the mold, and use the slide mechanism to drive the mold to move sideways (in a direction roughly perpendicular to the mold opening direction) during demoulding so that the mold is disengaged from the latch 142. This demoulding method is relatively complicated, and the mold cost is relatively high, which is not conducive to cost control of product production. Based on this, the present embodiment sets the insulating frame 12 in a split structure, and opens a third through hole 1211 in the upper frame 121 where the buckle 141 is set, so that simple demoulding can be achieved without adopting other demoulding methods. Demolding is faster and more convenient, and the mold cost is relatively reduced, which helps to reduce the production cost of the insulating frame 12.

[0081] In another embodiment of the present invention, Figure 1 、 Figure 3 、 Figure 6 and Figure 7 As shown, the outer rotor motor of this embodiment further includes a rotating shaft 60 and a rotor assembly 70 .

[0082] like Figure 1 and Figure 3 As shown, the mounting barrel 22 is provided with a first bearing chamber 221 at one end away from the mounting ear 21. The mounting ear 21 is provided with a second bearing chamber 222 that passes through the first bearing chamber 221. The second bearing chamber 222 is coaxially arranged with the first bearing chamber 221. Specifically, the mounting barrel 22 is further provided with a guide hole 223. The first bearing chamber 221 passes through the second bearing chamber 222 through the guide hole 223. A bearing 61 is respectively installed in the first bearing chamber 221 and the second bearing chamber 222. The rotating shaft 60 is sleeved with the two bearings 61. That is, the interior of the mounting base 20 is hollow and is provided with two bearing chambers located at both ends of the axial direction. The bearing chambers located at both ends of the axial direction increase the axial span of the two support bearings 61, and support the rotating shaft 60 on the inner side of the mounting base 20, thereby increasing the stability of the motor support and rotation.

[0083] like Figure 1 and Figure 3As shown, the rotor assembly 70 includes a rotor 71 and a magnet 72. The rotor 71 is rotatably sleeved on the end of the mounting cylinder 22 away from the mounting ear 21, and is sleeved on the outer side of the stator assembly 10 along the radial direction of the mounting cylinder 22. In this way, the rotor assembly 70 can be sleeved from the small-sized end of the mounting seat 20 to the outer side of the stator assembly 10, which has good assembly operability. The rotating shaft 60 is coaxially fixedly connected to the rotor assembly 70. Specifically, the rotor 71 is provided with an axial hole (not shown in the figure), and the rotating shaft 60 is passed through and fixed in the axial hole. The rotating shaft 60 has a supporting end 601 and an output end 602 arranged opposite to each other. The supporting end 601 is rotatably connected to the mounting seat 20, and the output end 602 extends to the side of the rotor 71 away from the stator assembly 10. That is, the mounting ear 21 of the mounting seat 20 of the outer rotor motor of this embodiment and the output section of the rotating shaft 60 are respectively located at the two ends of the motor's axial direction, so that the motor can not only realize the axial arrangement interface connection with the external bracket but also realize the radial arrangement interface connection with the external bracket, which is more convenient to install and use.

[0084] In some specific embodiments, Figure 3 、 Figure 4 and Figure 7 As shown, the wall of the first socket hole 111 of the stator core 11 is provided with a first flattened portion 1111, and the outer wall of the mounting barrel 22 is provided with a second flattened portion 225 that matches the first flattened portion 1111. The first flattened portion 1111 and the second flattened portion 225 are compatible, meaning that they are identical in shape and size and are positioned directly opposite each other. The flattened portion features provided at the contact point between the stator core 11 and the mounting barrel 22 provide a certain torque transmission capability for the mounting barrel 22. Furthermore, the first flattened portion 1111 and the second flattened portion 225 can be used for positioning, thereby improving the assembly efficiency of the stator core 11 and the mounting base 20.

[0085] In another embodiment of the present invention, the outer rotor motor further includes an end cover assembly 50 mounted on the mounting ear portion 21, such as Figure 1 、 Figure 3 、 Figure 7 、 Figure 10 and Figure 11 As shown, Figure 10 for Figure 1 The schematic diagram of the structure of the end cover assembly of the outer rotor motor is shown in FIG. Figure 11 for Figure 10 Exploded view of the end cap assembly shown.

[0086] In this embodiment, the power line 40 is connected to the terminal block 30, and the end cover assembly 50 includes a cover plate 51 and a wire pressing plate 52. The cover plate 51 is provided with a wire outlet groove 53. Figure 1 、 Figure 10 and Figure 11As shown, one end of the power line 40 is connected to the terminal block 30, and the other end of the power line 40 passes through the outlet groove 53. Figure 1 As shown, the wire pressing plate 52 cooperates with the cover plate 51 to clamp the power cord 40 in the wire outlet groove 53. Specifically, the wire pressing plate 52 cooperates with the bottom of the wire outlet groove 53 to clamp the power cord 40, ensuring that the power cord 40 will not move at will due to external force.

[0087] In this way, during motor operation, the power cord 40 will not be shaken by external forces, thereby preventing the connection between the power cord 40 and the terminal block 30 from loosening and preventing poor contact. Furthermore, the power cord 40 will not be repeatedly bent due to displacement, or break due to repeated friction with the terminal block 30 or the cover plate 51, effectively preventing damage to the power cord 40 and further improving the overall performance of the outer rotor motor. Furthermore, the end cap assembly 50 is manufactured separately from the mounting base 20, allowing it to be made of a more cost-effective material than the mounting base 20, thereby reducing the structural complexity of the mounting base 20 and the overall production cost of the motor.

[0088] In this embodiment, if Figure 1 、 Figure 7 and Figure 11 As shown, the cover plate 51 includes a cover portion 511 and a side plate portion 512 connected to the cover portion 511. The cover portion 511 is provided along the axial direction of the mounting barrel portion 22 to cover the end of the mounting ear portion 21 facing away from the terminal block 30. The side plate portion 512 is provided along the radial direction of the mounting barrel portion 22 to the side of the mounting ear portion 21. The wire outlet slot 53 is provided on the side plate portion 512. In this way, the power cord 40 is led out from the side of the outer rotor motor of this embodiment, which does not increase the axial dimension of the outer rotor motor of this embodiment, helps to reduce the axial height of the outer rotor motor, makes the motor structure more compact, and thus reduces the overall volume of the motor.

[0089] In this embodiment, if Figure 1 As shown, the side plate portion 512 is spaced apart from the side of the mounting ear portion 21 to facilitate routing of the power cord 40 and avoid interference with other structures when the power cord 40 is led out.

[0090] In some specific embodiments, Figure 10 and Figure 11As shown, the cover portion 511 is provided with an embedding opening 5111, which is connected to the wire outlet groove 53. The wire pressing plate 52 has a shielding portion 521 and a pressing portion 522. The shielding portion 521 is adapted to cover the embedding opening 5111, and the pressing portion 522 cooperates with the wire outlet groove 53 to clamp the power cord 40. In this way, the wire outlet groove 53 is provided on the side of the mounting seat 20. When the power cord 40 is led out, the power cord 40 is first led out from the embedding opening 5111, then clamped into the wire outlet groove 53, and then the wire pressing plate 52 is connected to the mounting ear portion 21 and the pressing portion 522 presses the power cord 40 into the wire outlet groove 53.

[0091] In this embodiment, in order to ensure that the power cord 40 is clamped in the outlet groove 53, the size of the groove of the outlet groove 53 can be set to be basically equal to the radial cross-sectional size of the power cord 40, that is, the outlet groove 53 can just allow the power cord 40 to be embedded. In this way, when the power cord 40 is clamped in the outlet groove 53, the power cord 40 directly abuts against the pressing portion 522, and the power cord 40 can be clamped in the outlet groove 53.

[0092] Alternatively, as Figure 10 and Figure 11 As shown, the size of the notch of the outlet groove 53 can also be set to be larger than the radial cross-sectional size of the power cord 40, and a protrusion 5221 is provided at the position where the pressing portion 522 is opposite to the outlet groove 53. When the wire pressing plate 52 is connected to the mounting ear 21, the protrusion 5221 extends into the corresponding outlet groove 53 and abuts against the power cord 40. That is, the protrusion 5221 abuts against the power cord 40, thereby clamping the power cord 40 in the outlet groove 53. In this way, the movement of the power cord 40 is restricted by the pressing of the protrusion 5221, and the size of the outlet groove 53 can be set relatively larger, so that power cords 40 of different sizes can be clamped, which has a wider range of applications and is more flexible.

[0093] In this embodiment, if Figure 10 and Figure 11 As shown, the side plate portion 512 of the cover plate 51 can be continuously provided with multiple outlet grooves 53. When multiple power cords 40 need to be led out, the multiple power cords 40 pass through different outlet grooves 53, which is convenient for management and repair and maintenance. In addition, in the above-mentioned scheme of providing a protrusion 5221 to press the power cord 40, a protrusion 5221 is respectively provided for each outlet groove 53, that is, a plurality of protrusions 5221 are continuously provided on the pressing portion 522 of the wire pressing plate 52. When the wire pressing plate 52 is connected to the mounting ear portion 21, each protrusion 5221 extends into each outlet groove 53, thereby pressing and clamping each power cord 40 in the corresponding outlet groove 53.

[0094] It can be understood that, in a specific embodiment, the number of the cable outlet slots 53 can be set according to specific needs such as the number of power lines 40 , and the number of the cable outlet slots 53 is not uniquely limited here.

[0095] In some specific embodiments, Figure 10 and Figure 11 As shown, the mounting opening 5111 may be located only on the cover portion 51. In this case, the wire outlet groove 53 is located in the notch at the end where the side plate portion 52 connects to the cover portion 51, thereby penetrating the mounting opening 5111. In other specific embodiments, the mounting opening 5111 may also extend from the cover portion 51 to the side plate portion 52. In this case, the wire outlet groove 53 may be located at any position on the side plate portion 52 and can penetrate the mounting opening 5111.

[0096] In another embodiment of the present invention, Figure 10 and Figure 11 As shown, the cover plate 51 is further provided with an insertion port 5121, and the wire pressing plate 52 is further provided with an insertion portion 523. The wire pressing plate 52 is plugged into the cover plate 51 through the insertion portion 523 and the insertion port 5121. In this way, the wire pressing plate 52 is plugged into and matched with the cover plate 51, which facilitates the positioning and installation of the wire pressing plate 52 and the mounting ear portion 21, and can also assist in limiting the position of the wire pressing plate 52.

[0097] Specifically, in this embodiment, Figure 11 As shown, the plug-in port 5121 is provided on the side plate portion 512 of the cover plate 51, and a plug-in port 5121 is provided on each side of the wire outlet groove 53. The cover plate portion 511 is provided with a stopper portion 5114 extending into the opening 5111 and located above the plug-in port 5121. The plug-in portion 523 is spaced apart and arranged at the bottom of the shielding portion 521 facing the wire outlet groove 53, and the shielding portion 521 is provided with a plug-in portion 523 on each side corresponding to the two plug-in ports 5121. The two plug-in portions 523 are respectively inserted into the corresponding plug-in ports 5121, and the two stoppers 5114 respectively abut against the plug-in portions 523 located below to limit the axial movement of the wire pressing plate 52 along the mounting barrel portion 22, thereby preventing the wire pressing plate 52 from shaking and affecting the connection stability of the wire pressing plate 52 to the mounting ear portion 21.

[0098] In another embodiment of the present invention, Figure 1 、 Figure 7 and Figure 11As shown, the mounting ear portion 21 includes a first connecting ear 211, a second connecting ear 212, and a third connecting ear 213 arranged along the circumference of the mounting barrel portion 22. The wire pressing plate 52 is connected to the first connecting ear 211, and the cover portion 511 is connected to the third connecting ear 213. The second connecting ear 212 is exposed from the cover portion 511 and is used to connect to an external structure other than the outer rotor motor of this embodiment. In the axial direction of the mounting barrel portion 22, the outer end surfaces of the first connecting ear 211 and the outer end surfaces of the third connecting ear 213 are respectively concave relative to the outer end surface of the second connecting ear 212. When the cover plate 51 and the wire pressing plate 52 are installed on the mounting ear 21, the outer end surface of the wire pressing plate 52 and the outer end surface of the cover plate portion 511 are concave relative to the outer end surface of the second connecting ear 212, or the outer end surface of the wire pressing plate 52 and the outer end surface of the cover plate portion 511 are flush with the outer end surface of the second connecting ear 212. In this way, it is ensured that the axial size of the motor will not be enlarged due to the setting of the end cover assembly 50, thereby meeting the needs of miniaturization development of the motor.

[0099] The outer end surfaces of the first connecting lug 211 , the second connecting lug 212 and the third connecting lug 213 refer to the end surfaces of the three connecting lugs facing away from the mounting cylindrical portion 22 along the axial direction of the mounting cylindrical portion 22 .

[0100] In this embodiment, along the axial direction of the mounting barrel 22, the depth of the recess of the first connecting ear 211 relative to the second connecting ear 212 is equal to the thickness of the cover portion 511. The thickness of the wire pressing plate 52 is substantially equal to the thickness of the cover portion 511. This allows the outer end surfaces of the cover portion 511, the wire pressing plate 52, and the second connecting ear 212 to lie on the same plane, resulting in greater overall consistency and a more continuous and aesthetically pleasing structure. Furthermore, a clearance opening 5113 is provided at the position of the cover portion 511 corresponding to the second connecting ear 212. The clearance opening 5113 allows the second connecting ear 212 to be exposed. The wall surface of the clearance opening 5113 abuts against the side wall of the second connecting ear 212, preventing the presence of gaps that could allow dust and the like to enter.

[0101] In this embodiment, if Figure 7 As shown, the mounting ear portion 21 has a plurality of second connecting ears 212, a first connecting ear 211, and two third connecting ears 213, wherein the plurality of second connecting ears 212 are evenly spaced along the circumference of the mounting ear portion 21, the first connecting ear 211 is arranged between two adjacent second connecting ears 212, and the two third connecting ears 213 are arranged between two adjacent second connecting ears 212. The first connecting ear 211 and the third connecting ears 213 are not adjacent to each other, and the first connecting ear 211 and the two third connecting ears 213 are rotationally symmetrical relative to the axis of the mounting cylinder 22. In this way, the entire mounting ear portion 21 has a rotationally symmetrical structure, the mass is evenly distributed, and the structural stability is higher.

[0102] Further, if Figure 1 、 Figure 7 and Figure 11 As shown, in the present embodiment, the wire pressing plate 52 is provided with a first connecting hole 5211, and the position of the first connecting ear 211 corresponding to the first connecting hole 5211 is provided with a screw hole 214. The wire pressing plate 52 is screwed to the screw hole 214 of the first connecting ear 211 after passing through the first connecting hole 5211 by a fastener 100 such as a screw or bolt. Similarly, the cover plate portion 511 is provided with a second connecting hole 5112, and the position of the third connecting ear 213 corresponding to the third connecting hole 215 is provided with a screw hole 214. The cover plate portion 511 is screwed to the screw hole 214 of the third connecting ear 213 after passing through the second connecting hole 5112 by a fastener 100 such as a screw or bolt. That is, the cover plate portion 511 and the wire pressing plate 52 are fastened to the mounting ear portion 21 by the fastener 100, and the disassembly operation is simple and the connection reliability is high. In addition, the second connecting ear 212 is provided with a third connecting hole 215, and the third connecting hole 215 is used to connect to the external structure.

[0103] The outer rotor motor provided by the above-mentioned embodiments of the present invention connects the terminal block and the insulating frame by providing a snap-fit ​​structure, which makes the installation operation of the terminal block simpler and the assembly efficiency improved. In addition, the installation of the terminal block does not require the aid of additional external connectors such as screws. The installation of the terminal block is not restricted by the supply of connectors and can be installed anywhere and at any time, making the operation more convenient and flexible. In addition, by connecting the terminal block through the snap-fit ​​structure, the terminal block will not become loose due to loose connectors, and the assembly stability of the terminal block and the insulating frame is higher, thereby improving the overall performance of the outer rotor motor of the present application.

[0104] Another embodiment of the present invention further provides a wind turbine, comprising the above-mentioned outer rotor motor.

[0105] The fan provided by the embodiments of the present invention, by using the outer rotor motor described above, reduces production costs, and provides more stable and reliable electrical performance. The probability of electrical failures in the fan due to poor electrical contact in the outer rotor motor is reduced, thereby improving overall fan performance, reducing maintenance frequency, and enhancing user experience. This fan also possesses the other technical advantages of the outer rotor motor provided by the aforementioned embodiments, which will not be detailed here.

[0106] It can be understood that the fan of this embodiment is not only suitable for mobile air conditioners, but also for other types of air conditioning units such as window units, split units, etc. Of course, the outer rotor motor of this embodiment is also suitable for other equipment such as exhaust equipment, air purification systems and cooling equipment.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An outer rotor motor, characterized in that: include: The mounting seat includes a mounting ear portion and a mounting cylinder portion protruding from one side of the mounting ear portion; The stator assembly includes a stator core and an insulating frame, wherein the stator core is sleeved on the mounting barrel, an end surface of the stator core facing the mounting ear is spaced apart from the mounting ear and forms a mounting gap, and the insulating frame is covered with the stator core and is provided with a clip protruding into the mounting gap; A terminal block is disposed in the installation gap, the terminal block is provided with a latch, and the terminal block is buckled to the insulating frame through the latch and the buckle; as well as An end cover assembly, wherein a power cord is connected to the terminal block, and the end cover assembly includes a cover plate and a wire pressing plate, the cover plate is provided with a wire outlet groove, one end of the power cord is connected to the terminal block, and the other end of the power cord passes through the wire outlet groove, the wire pressing plate cooperates with the cover plate to clamp the power cord in the wire outlet groove, the cover plate includes a cover plate portion, the cover plate portion is provided with an embedding opening, the embedding opening is connected to the wire outlet groove, the wire pressing plate has a shielding portion and a pressing portion, the shielding portion covers the embedding opening, and the pressing portion cooperates with the wire outlet groove to clamp the power cord.

2. The outer rotor motor according to claim 1, characterized in that The insulating frame is provided with a first through hole for the mounting cylinder to pass through, and the terminal block is provided with a second through hole for the mounting cylinder to pass through. The clip is provided on the end surface of the insulating frame facing the mounting ear and is located at the edge of the first through hole, and the clamping position is provided at the edge of the second through hole.

3. The outer rotor motor according to claim 2, characterized in that: The buckle includes an elastic arm and a barb provided at the free end of the elastic arm. The clamping position is a through slot provided on the wiring board. The barb passes through the through slot and is hooked on the wiring board.

4. The outer rotor motor according to claim 3, characterized in that The mounting ear portion includes a plurality of connecting ears spaced apart along the circumference of the mounting cylinder portion, and the barb is located between two adjacent connecting ears.

5. The outer rotor motor according to claim 3, characterized in that: The mounting ear portion is provided with a receiving groove toward the bottom of the wiring board, and the barb is inserted into the receiving groove.

6. The outer rotor motor according to claim 3, characterized in that The through groove is connected to the second through hole, and the size of the portion where the through groove is connected to the second through hole is equal to the size of the elastic arm.

7. The outer rotor motor according to claim 3, characterized in that The insulating frame is further provided with a limiting boss, and the end of the limiting boss facing the mounting ear portion abuts against the bottom surface of the terminal block facing away from the mounting ear portion.

8. The outer rotor motor according to claim 7, characterized in that The insulating frame is provided with a plurality of the clips at intervals, and the limiting boss is provided at the edge of the opening of the first through hole and is located between two adjacent clips.

9. The outer rotor motor according to claim 2, characterized in that: A positioning post is further provided on the edge of the opening of the first through hole. The positioning post is spaced apart from the buckle. A positioning hole for inserting the positioning post is provided at a position corresponding to the positioning post on the wiring board.

10. The outer rotor motor according to claim 1, characterized in that A clamping boss is provided on the outer peripheral wall of the end portion of the mounting cylinder connected to the mounting ear portion, the terminal block is sleeved on the clamping boss, the stator core is sleeved on the end of the mounting cylinder portion where the clamping boss is not provided, and the end surface of the stator core facing the mounting ear portion is in contact with the clamping boss.

11. The outer rotor motor according to claim 10, characterized in that: The stator core is bonded to the mounting cylinder by adhesive, and the outer peripheral wall of the mounting cylinder is provided with a groove for accommodating the adhesive.

12. The outer rotor motor according to any one of claims 1 to 11, characterized in that: The insulating frame is an integral part, and the insulating frame is integrally molded onto the stator core.

13. The outer rotor motor according to any one of claims 3 to 8, characterized in that: The insulating frame includes an upper frame and a lower frame. Along the axial direction of the mounting cylinder, the upper frame is connected to one end of the stator core facing the mounting ear, and the lower frame is connected to the other end of the stator core facing away from the mounting ear. The clip is provided on the upper frame. A third through hole is provided on the upper frame at a position opposite to each of the barbs. The third through hole passes through the upper frame along the axial direction of the first through hole. The size of the third through hole is greater than or equal to the size of the barb.

14. A fan, characterized in that: The outer rotor motor comprises the outer rotor motor according to any one of claims 1 to 13.

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