Motor convenient to disassemble and assemble

Abstract

The utility model discloses a motor convenient to disassemble and assemble. The motor comprises a stator and rotor shell, a controller shell, a connecting piece and a conducting piece, a stator and a rotor are accommodated in the stator and rotor shell; a controller is accommodated in the controller shell; one end of the connecting piece is electrically connected with the stator and the rotor, and the other end of the connecting piece extends to the outer side of the controller shell; one end of the conduction piece is located on the outer side of the controller shell and electrically connected with the connecting piece, and the other end of the conduction piece is located on the inner side of the controller shell and electrically connected with the controller, so that the connecting piece is electrically connected to the controller through the conduction piece; wherein the connecting piece is detachably connected with the conduction piece, and / or, the conduction piece is detachably connected with the controller shell, and / or, the conduction piece is detachably connected with the controller shell, and / or, the conduction piece is detachably connected with the controller. The motor convenient to disassemble and assemble is used for realizing convenient disassembly and assembly of the controller.

Description

Technical Field

[0001] This utility model relates to a motor that can be easily disassembled and assembled. Background Technology

[0002] An electric motor is a common driving element used to move various devices. The main components of an electric motor include a stator, a rotor, and a controller. The stator, rotor, and controller are connected by connecting wires, allowing the controller to control the operation and stopping of the stator and rotor.

[0003] In existing motors, the connecting wires are generally located inside the motor housing. These wires extend from the stator and rotor, both inside the motor housing, to the controller, which is also located inside the motor housing, thus connecting the wires to the controller. Since the motor manufacturing process and subsequent use involve the installation and removal of the controller, the placement of the connecting wires inside the motor housing in existing motors makes the separation and connection of the wires to the controller difficult, consequently making the motor controller difficult to disassemble and install. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a motor that can be easily disassembled and installed, enabling convenient removal and installation of the controller.

[0005] This utility model is achieved through the following technical solution:

[0006] A motor that can be easily disassembled and assembled, comprising:

[0007] A stator and rotor housing, wherein a stator and rotor are housed inside the stator and rotor housing;

[0008] A controller housing, wherein a controller is housed within the controller housing;

[0009] The connector has one end electrically connected to the stator and rotor, and the other end extends to the outside of the controller housing;

[0010] A conductive element, one end of which is located on the outside of the controller housing and electrically connected to the connector, and the other end of which is located on the inside of the controller housing and electrically connected to the controller, so that the connector is electrically connected to the controller through the conductive element;

[0011] Wherein, the connector is detachably connected to the conductor, and / or the conductor is detachably connected to the controller housing, and / or the conductor is detachably connected to the controller.

[0012] Furthermore, the connector includes a connecting wire, one end of which extends into the inner side of the stator and rotor housing and is electrically connected to the stator and rotor.

[0013] The motor also includes a seal for sealing the connection between the connecting wire and the stator and rotor housing.

[0014] Furthermore, the stator and rotor housing is provided with a notch that penetrates the stator and rotor housing; the seal seals the notch, and the seal is provided with a sealing hole for the connecting wire to pass through; one end of the connecting wire passes through the sealing hole and extends into the interior of the stator and rotor housing.

[0015] Furthermore, the connecting wire extends to the outside of the stator and rotor housing and is bent to form a first bend; a guide component is provided on the side of the seal facing the outside, and the guide component is used to guide and maintain the bending angle of the first bend.

[0016] Furthermore, the guiding component includes a connector and a guide. The connector is provided with a connecting hole for the connecting wire to pass through. The guide and the connector form a receiving space that communicates with the connecting hole and is used to accommodate the first bend. The guide is pressed against the connecting wire to guide and maintain the bending angle of the first bend.

[0017] Furthermore, the angle formed between the pressing end face of the guide member used to press the connecting wire and the connecting hole is the same as the bending angle of the first bending portion;

[0018] And / or, the guide assembly further includes a first mounting member and a second mounting member, the first mounting member being used to lock the connector to the stator and rotor housing; the guide member being connected to the connector via the second mounting member and pressing the connecting wire.

[0019] Furthermore, the motor is provided with a guide channel that communicates with the outside world. After the connecting wire forms the first bend, it passes through the guide channel and extends toward the controller housing. The extension direction of the first bend is consistent with the length direction of the guide channel.

[0020] Furthermore, one end of the connecting wire near the controller housing is bent toward the controller housing to form a second bend. After forming the second bend, the connecting wire extends to the outside of the controller housing and is electrically connected to the conductive element.

[0021] Furthermore, the stator and rotor housing includes a first main body shell with an opening at one end and a stator and rotor end cap that covers the opening of the first main body shell; the notch is formed in the first main body shell and extends to the stator and rotor end cap, and the stator and rotor end cap and the first main body shell together clamp the sealing element;

[0022] The sealing element has an embedding groove, and the inner wall of the embedding groove abuts against the inner and outer walls of the first main body shell respectively.

[0023] Furthermore, the controller housing includes a second main body shell with one end open and a controller end cover covering the second main body shell. The connecting wire extends to the outside of the controller end cover, and the conductive element passes through the controller end cover to be electrically connected to the controller.

[0024] Furthermore, the conductive element is a metal screw.

[0025] Furthermore, it also includes a mounting bracket. The controller housing and the stator and rotor housing are detachably disposed at opposite ends of the mounting bracket along the axial direction. The mounting bracket is provided with a first air inlet communicating with the outside and a first air outlet communicating with the stator and rotor housing. A flow guide channel is constructed between the mounting bracket and the controller housing. Airflow through the first air inlet flows into the flow guide channel and flows out of the first air outlet.

[0026] Furthermore, the mounting bracket is made of plastic, while the first main body shell and the second main body shell are made of metal.

[0027] Furthermore, the first air inlet penetrates the mounting bracket radially along the motor, and the flow guide channel extends radially from the first air inlet to the first air outlet along the motor, with the cross-sectional area of ​​the flow guide channel gradually decreasing along the gas flow direction.

[0028] Furthermore, it also includes a fan, which is disposed on the side of the mounting bracket facing the stator and rotor housing, and the fan power guides the airflow from the first air outlet to the stator and rotor housing.

[0029] Furthermore, the fan includes a connecting part, a fan fin part, a first fixing part, and a second fixing part.

[0030] The connecting part is fixedly connected to the rotating shaft of the stator and rotor;

[0031] The number of fan fins is provided in multiple ways, and the multiple fan fins are arranged circumferentially on the connecting part;

[0032] The first fixing part and the second fixing part are axially spaced on opposite sides of the fan fin, wherein the first fixing part is circumferentially disposed at the outer edge of the fan fin and located on one side of the first air outlet, and the second fixing part is circumferentially disposed at the root of the fan fin.

[0033] The gap between the first fixing part and the connecting part constitutes the second air inlet, and the gap between the outer edge of the first fixing part and the outer edge of the second fixing part constitutes the second air outlet.

[0034] Furthermore, the projection of the first air outlet in the radial direction covers the second air inlet, so that the airflow in the second air inlet is greater than or equal to a preset value in real time.

[0035] Furthermore, the mounting bracket is provided with a first protrusion protruding towards the first fixing part near the first air outlet, and the first fixing part is provided with a corresponding second protrusion. The first protrusion is radially arranged around the outside of the second protrusion and axially extends to be flush with or beyond the end face of the first protrusion, so as to form an airflow channel.

[0036] Compared with the prior art, the advantages of this utility model are at least as follows:

[0037] By placing one end of the connecting wire connected to the controller on the outside of the controller housing, it is easy to connect and disconnect the connecting wire and the controller, thereby facilitating the installation and disassembly of the controller. In addition, by setting a conductive component that can penetrate the controller housing, it is possible to achieve an electrical connection between the connecting wire located on the outside of the controller housing and the controller located on the inside of the controller housing. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a motor according to an embodiment of the present invention;

[0039] Figure 2 This is a planar sectional view of a motor according to an embodiment of the present invention;

[0040] Figure 3 for Figure 2 Enlarged view of section A;

[0041] Figure 4 This is a partial structural diagram of a motor according to an embodiment of the present invention;

[0042] Figure 5 This is a partial cross-sectional view of a motor according to an embodiment of the present invention;

[0043] Figure 6 This is an exploded view of a portion of the structure of a motor according to an embodiment of the present invention;

[0044] Figure 7 This is a partial cross-sectional view of a motor according to an embodiment of the present invention;

[0045] Figure 8 for Figure 7 Enlarged view of section B;

[0046] Figure 9 This is another partial cross-sectional view of a motor according to an embodiment of the present invention;

[0047] Figure 10 This is a schematic diagram of the structure of a motor mounting bracket according to an embodiment of the present invention;

[0048] Figure 11 This is a schematic diagram of the structure of the first heat dissipation housing of a motor according to an embodiment of the present invention;

[0049] Figure 12 This is a partial cross-sectional view of the motor portion structure according to an embodiment of the present invention;

[0050] Figure 13 This is a schematic diagram of the structure of the fan of the motor according to an embodiment of the present invention.

[0051] In the diagram: 1. Stator and rotor housing; 11. Stator and rotor; 12. Notch; 13. First main body shell; 14. Stator and rotor end cover; 2. Controller housing; 21. Controller; 22. Second main body shell; 23. Controller end cover; 24. Second guide surface; 241. First part; 242. Second part; 25. Receiving cavity; 26. Heat dissipation fins; 3. Connector; 31. First bend; 32. Second bend; 4. Conductor; 5. Seal; 51. Sealing hole; 52. Embedding groove; 6. Guide assembly; 61. Connector; 611. Connecting hole; 62. Guide; 621. Pressing end face; 63. Accommodating cavity 64. First mounting component; 65. Second mounting component; 7. Guide channel; 8. Mounting bracket; 81. First air inlet; 82. First air outlet; 83. Flow guide channel; 831. Stable flow zone; 832. Turbulent flow zone; 84. First protrusion; 85. Flange; 851. Rib; 852. Flow guide; 853. First flow guide surface; 854. First end face; 86. Side wall; 87. First locking hole; 88. Second locking hole; 9. Fan; 91. Connecting part; 92. Fan fin part; 93. First fixing part; 931. Second protrusion; 94. Second fixing part; 95. Second air inlet; 96. Second air outlet. Detailed Implementation

[0052] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0053] like Figures 1 to 6 As shown, a motor that can be easily disassembled and assembled according to a preferred embodiment of the present utility model includes a stator and rotor housing 1, a stator and rotor 11 housed in the stator and rotor housing 1, a controller housing 2, a controller 21 housed in the controller housing 2, a connector 3, and a conductor 4, and may also include a mounting bracket 8.

[0054] One end of the connector 3 can be connected to the stator and rotor 11, and after being connected to the stator and rotor 11, the connector 3 can extend outside the motor to the outside of the controller housing 2. When one end of the connector 3 extends to the outer shell of the controller housing 2, it can be electrically connected to the connector 3 using a conductor 4. The conductor 4 can pass through the controller housing 2 to extend into the controller housing 2 and be electrically connected to the controller 21 located inside the controller housing 2. At this time, the connector 3 can be electrically connected to the controller 21 through the conductor 4. The conductor 4 can include a head 41 and a body 42 that are connected to each other. The head 41 of the conductor 4 is located outside the controller housing 2 and abuts against the connector 3 to achieve an electrical connection with the connector 3. The body 42 of the conductor 4 passes through the controller housing 2 and is located inside the controller housing 2 to connect with the controller 21.

[0055] In some specific embodiments, the connector 3 can be detachably connected to the conductor 4. When it is necessary to remove the controller 21, the connector 3 can be separated from the conductor 4, thereby terminating the connection between the connector 3 and the controller 21, and then the controller 21 can be removed. When it is necessary to install the controller 21, the connector 3 and the conductor 4 are connected to achieve an electrical connection between the connector 3 and the controller 21. Specifically, one end of the connector 3 extending to the controller housing 2 is located between the head 41 of the conductor 4 and the controller housing 2. The conductor 4 then presses the connector 3 against the controller housing 2 and abuts against the connector 3, thereby achieving the connection between the connector 3 and the controller housing 2. When it is necessary to separate the connector 3, the conductor 4 is loosened to release the clamping force applied by the conductor 4 to the connector 3, thereby separating the connector 3 from the conductor 4.

[0056] In some specific embodiments, the conductive element 4 is detachably connected to the controller housing 2. When it is necessary to remove the controller 21, the conductive element 4 can be separated from the controller housing 2, thereby disconnecting the connector 3 from the controller 21, and then the controller 21 can be removed. When it is necessary to install the controller 21, the conductive element 4 is connected to the controller housing 2 to achieve electrical connection between the connector 3 and the controller 21. Specifically, the controller housing 2 is provided with a threaded hole for mating with the conductive element 4. The main body 42 of the conductive element 4 has an external thread. The main body 42 of the conductive element 4 is placed in the threaded hole of the controller housing 2 and threadedly connected to the controller housing 2, thereby allowing the conductive element 4 to be detachably connected to the controller housing 2.

[0057] In some other embodiments, the conductive element 4 can be detachably connected to the controller 21. When the controller 21 needs to be removed, the conductive element 4 can be separated from the controller 21, thereby disconnecting the connector 3 from the controller 21, and then the controller 21 can be removed. When the controller 21 needs to be installed, the conductive element 4 can be connected to the controller 21 to achieve electrical connection between the connector 3 and the controller 21. Specifically, the controller 21 is provided with a threaded hole for mating with the conductive element 4. The main body 42 of the conductive element 4 has an external thread. The main body 42 of the conductive element 4 is placed in the threaded hole of the controller 21 and threadedly connected to the controller 21, thereby allowing the conductive element 4 to be detachably connected to the controller 21.

[0058] In other embodiments, the connector 3 can be detachably connected to the conductor 4. Furthermore, the conductor 4 can be detachably connected to the controller housing 2, and also detachably connected to the controller 21. When the controller 21 needs to be removed, the conductor 4 can be separated from both the controller 21 and the controller housing 2, simultaneously releasing the clamping force applied to the connector 3, thereby separating the connector 3 from the conductor 4 and from the controller housing 2. When the controller 21 needs to be installed, the conductor 4 is connected to the controller housing 2, simultaneously pressing the connector 4 against the connector 3, thereby achieving an electrical connection between the connector 3 and the controller 21 through the conductor 4. Specifically, the conductor 4 can be a metal screw, and the connector 3 can include one or more connecting wires, which are electrically connected to the conductor 4 and the stator / rotor 11, respectively. These connecting wires can be UVW wires.

[0059] In some specific embodiments, the controller housing 2 includes a second main body shell 22 with one open end and a controller end cover 23 covering the second main body shell 22. The second main body shell 22 and the controller end cover 23 together form a receiving cavity for accommodating the controller 21. One end of the connecting wire in the connector 3 can extend to one side of the controller end cover 23, specifically to the side of the controller end cover 23 facing outward along the motor axis. The conductor 4 passes through the controller end cover 23 to electrically connect with the controller 21 located inside the controller housing 2. The controller end cover 23 may have a threaded hole for mating with the conductor 4.

[0060] The connecting wire is electrically connected to the stator 11 located inside the stator housing 1. The connecting wire then passes through the stator housing 1 to extend to the outside of the stator housing 1, and extends from the outside of the stator housing 1 to the outside of the controller housing 2. In this embodiment, the connecting wire is electrically connected to the stator 11 located inside the stator housing 1.

[0061] Further reference Figure 3To seal the stator and rotor 11, a sealing element 5 is provided at the connection between the connecting wire and the stator and rotor housing 1. The sealing element 5 seals the connection between the connecting wire and the stator and rotor housing 1, thereby preventing external impurities or moisture from entering the stator and rotor housing 1 through the connection. Specifically, the stator and rotor housing 1 has a notch 12 penetrating through it. The sealing element 5 seals this notch 12 and has a sealing hole 51 for the connecting wire to pass through, connecting the inner and outer sides of the stator and rotor housing 1. When one end of the connecting wire is electrically connected to the stator and rotor 11, the connecting wire passes through the sealing hole 51 of the sealing element 5 and extends to the outside of the stator and rotor housing 1. The diameter of the sealing hole 51 of the sealing element 5 can be slightly smaller than the straight length of the connecting wire, so that the sealing hole 51 of the sealing element 5 and the connecting wire have an interference fit, thereby sealing the connection between the sealing element 5 and the connecting wire. The sealing element 5 can be made of a material with a certain degree of elasticity, such as rubber or plastic.

[0062] Further reference Figure 6 In some specific embodiments, in order to facilitate the sealing effect of the sealing member 5, the sealing member 5 is provided with an embedding groove 52, and the inner wall of the embedding groove 52 abuts against the inner and outer walls of the first main body shell 13 respectively, so as to increase the sealing area between the sealing member 5 and the first main body shell 13 and improve the sealing effect of the sealing member 5.

[0063] Further reference Figure 3 and Figure 4 In some specific embodiments, the stator and rotor housing 1 includes a first main body shell 13 with one end open and a stator and rotor end cover 14 covering the opening of the first main body shell 13. The first main body shell 13 and the stator and rotor end cover 14 together form a receiving cavity for accommodating the stator and rotor 11. The notch 12 can be formed in the first main body shell 13, specifically on the side of the first main body shell 13 adjacent to the stator and rotor end cover 14, so as to shorten the lead-out distance of the UVW lines of the stator and rotor component 11. One end of the notch 12 can penetrate the first main body shell 13 along the motor axis and extend to the stator and rotor end cover 14. When the seal 5 is installed at the notch 12, along the motor axis, the stator and rotor end cover 14 and the first main body shell 13 are disposed on opposite sides of the seal 5, and the stator and rotor end cover 14 and the first main body shell 13 can clamp and fix the seal 5, so that the connection between the seal 5 and the stator and rotor end cover 14 and the first main body shell 13 is sealed, and the seal 5 can be fixed.

[0064] The controller 21 and the stator and rotor 11 in the motor are generally spaced apart along the motor axis. One end of the connecting wire is electrically connected to the stator and rotor 11 and passes through the stator and rotor housing 1 radially along the motor. To allow the connecting wire to extend toward the controller 21, the connecting wire can be bent after extending to the outside of the stator and rotor housing 1, so that the connecting wire can extend toward the controller 21 along the motor axis. The part of the connecting wire that is bent after extending to the outside of the stator and rotor housing 1 can form a first bend 31.

[0065] After the connecting wire forms the first bend 31, due to the weight and elasticity of the connecting wire, the connecting wire may not be able to maintain the bending angle of the first bend 31. In order to make the connecting wire maintain the bending angle required for the first bend 31, a guide component 6 is provided on the side of the sealing member 5 facing the outside. The guide component 6 can be used to guide and maintain the bending angle of the first bend 31.

[0066] Specifically, the guide assembly 6 may include a connector 61 and a guide 62. The connector 61 is disposed on the side of the seal 5 facing outward, and the connector 61 is provided with a connection hole 611 for a connecting wire to pass through. The connection hole 611 can communicate with the sealing hole 51 of the seal 5, so that the connecting wire can extend further from the sealing hole 51 of the seal 5 into the connection hole 611 of the connector 61.

[0067] A receiving space 63 is formed between the guide member 62 and the connector 61, communicating with the connection hole 611 and used to accommodate the first bend 31. The receiving space 63 can communicate with the connection hole 611 of the connector 61, so that the connecting wire can pass through the connection hole 611 and extend into the receiving space 63 to bend and form the first bend 31. The guide member 62 can be pressed against the connecting wire to guide and maintain the bending angle of the first bend 31. Wherein, the included angle formed between the clamping end face 621 of the guide member 62 for clamping the connecting wire and the connecting hole 611 is the same as the bending angle of the first bending portion 31; for example, the connecting hole 611 of the connector 61 can penetrate the connector 61 radially along the motor, and the clamping end face 621 of the guide member 62 for clamping the connecting wire is parallel to the motor axis; when the connecting wire passes through the connecting hole 611 radially along the motor, the connecting wire will change from extending radially along the motor to extending axially along the motor within the receiving space 63, and the part of the connecting wire extending axially along the motor will abut against the clamping end face 621 of the guide member 62, so that the clamping end face 621 of the guide member 62 guides the extension direction of the connecting wire, and the guide member 62 can apply clamping force to the connecting wire so that the connecting wire maintains the bending angle required by the first bending portion 31.

[0068] To achieve a fixed connection between the guide assembly 6 and the stator / rotor housing 1, the guide assembly 6 further includes a first mounting member 64 and a second mounting member 65. The first mounting member 64 is used to lock the connector 61 to the stator / rotor housing 1. For example, the first mounting member 64 passes through the connector 61 and is threadedly connected to the stator / rotor housing 1, thereby keeping the connector 61 fixed to the stator / rotor housing 1. The guide member 62 is connected to the connector 61 via the second mounting member 65 and presses against the connecting wire. For example, the second mounting member 65 passes sequentially through the guide member 62, the receiving space 63, and the connector 61, and is threadedly connected to the stator / rotor housing 1 or the seal 5, thereby keeping the guide member 62, the connector 61, and the stator / rotor housing 1 fixed. The second mounting member 65 can also press against the guide member 62, thereby allowing the guide member 62 to apply a clamping force to the connecting wire located within the receiving space 63. The first mounting member 64 and the second mounting member 65 can each be a screw.

[0069] Further reference Figure 2 and Figure 3 In some specific embodiments, after the connecting wire forms the first bend 31, it extends along the motor axis. To further guide the connecting wire, the motor is provided with a guide channel 7 that communicates with the outside world. The guide channel 7 can extend along the motor axis. After the connecting wire forms the first bend 31, it can extend into the guide channel 7 and extend along the guide channel 7 toward the controller housing 2. The extension direction of the first bend 31 of the connecting wire is consistent with the length direction of the guide channel 7.

[0070] In some specific embodiments, one end of the connecting wire near the controller housing 2 is bent toward the controller housing 2 to form a second bend 32. Specifically, one end of the connecting wire near the controller housing 2 is bent from extending along the motor axis to extending radially along the motor, so that the end of the connecting wire used to connect with the controller 21 can extend to the side of the controller housing 2 facing outward along the motor axis, and then the connecting wire can be electrically connected to the controller 21 through the conductor 4.

[0071] The mounting bracket 8 is disposed between the second main housing 22 and the first main housing 13. For example, the second main housing 22, the mounting bracket 8, and the first main housing 13 are arranged sequentially at intervals along the axial direction of the motor.

[0072] Further reference Figure 10The mounting bracket 8 may include a flange portion 85 located between the controller housing 2 and the stator / rotor housing 1, and a side wall 86 surrounding the outside of the flange portion 85. The mounting bracket 8 is provided with a first air inlet 81 communicating with the outside and a first air outlet 82 communicating with the stator / rotor housing 1. The flange portion 85 is hollowed out at its center to form the first air outlet 82. Specifically, the flange portion 85 has multiple circumferentially arranged ribs 851 at its center, with an axially continuous hollow structure between adjacent ribs 851. The flange portion 85 may also include a guide portion 852, which can be connected to the side wall 86 and the ribs 851 respectively, for example, integrally connected to the side wall 86 and the ribs 851 respectively. Specifically, the guide portion 852 has an annular structure, with the inner ring of the guide portion 852 integrally connected to the ribs 851 and the outer ring of the guide portion 852 integrally connected to the side wall 86.

[0073] Specifically, the first air inlet 81 can be located on the side wall 86 of the mounting bracket 8, and one or more first air inlets 81 can be provided; preferably, multiple first air inlets 81 are provided, and the multiple first air inlets 81 are distributed at intervals along the circumference of the mounting bracket 8. Each first air inlet 81 can be used to allow external gas to pass through, so that the gas can enter the interior of the mounting bracket 8, i.e., the interior of the motor, at different positions along the circumference of the mounting bracket 8. The gas flowing into the guide channel 83 at each first air inlet 81 gathers from the periphery towards the center. The first air inlet 81 can penetrate the side wall 86 of the mounting bracket 8 radially along the motor, so that the interior of the mounting bracket 8 is connected to the outside, and the flow at the first air inlet 81 flows radially into the guide channel 83.

[0074] Further reference Figure 7 and Figure 8 The first air outlet 82 can pass through the mounting bracket 8 along the motor axis, and the airflow at the first air outlet 82 flows out of the guide channel 83 along the axis. The cross-sectional area of ​​the first air inlet 81 in the radial direction is smaller than the cross-sectional area of ​​the guide channel 83 where it connects to the first air inlet 81, so that the guide channel 83 can receive all the airflow flowing in from the first air inlet 81. The cross-sectional area of ​​the first air inlet 81 in the radial direction is larger than the cross-sectional area of ​​the guide channel 83 where it connects to the first air outlet 82, so that the airflow in the guide channel 83 can be accelerated.

[0075] The controller housing 2, mounting bracket 8, and stator / rotor housing 1 can be arranged sequentially along the motor axis, for example, spaced apart sequentially along the motor axis. The first air outlet 82 can be a flange portion 85 that penetrates the mounting bracket 8 along the motor axis; that is, the axially continuous perforated structure formed between two adjacent ribs 851 serves as the first air outlet 82. The controller housing 2, the flange portion 85 of the mounting bracket 8, and the stator / rotor housing 1 are arranged spaced apart sequentially along the motor axis.

[0076] A flow channel 83 is constructed between the mounting bracket 8 and the controller housing 2. For example, the flange portions 85 of the mounting bracket 8 and the controller housing 2 are spaced apart along the motor axis to form the flow channel 83. The flow channel 83 connects the first air inlet 81 and the first air outlet 82, and the flow cross-section of the flow channel 83 decreases along the airflow direction. External gas can flow into the flow channel 83 from the first air inlet 81 and pass through the controller housing 2 used to form the flow channel 83 to remove the heat from the controller housing 2. The gas can then continue to flow from the flow channel 83 and be accelerated. The accelerated gas passes through the first air outlet 82 and flows towards the stator and rotor housing 1 located at the end of the mounting bracket 8 opposite to the controller housing 2, thereby removing the heat generated by the stator and rotor housing 1.

[0077] Further reference Figure 8 and Figure 9 In some specific embodiments, the flange portion 85 includes a first guide surface 853 facing the controller housing 2. For example, the first guide surface 853 is formed on the end face of the guide portion 852 of the flange portion 85 facing the controller housing 2. The controller housing 2 includes a second guide surface 24 facing the mounting bracket 8, and the second guide surface 24 is disposed opposite to the first guide surface 853. The first guide surface 853 and the second guide surface 24 can form at least a partial guide channel 83, and the at least partial guide channel 83 formed by the first guide surface 853 and the second guide surface 24 communicates with the first air inlet 81.

[0078] The angle between the projection of the end faces of the first guide surface 853 and the second guide surface 24 perpendicular to the axis and the radial direction is an acute angle. Therefore, the cross-sectional area of ​​the partial guide channel enclosed by the first guide surface 853 and the second guide surface 24 gradually decreases along the gas flow direction. The partial guide channel enclosed by the first guide surface 853 and the second guide surface 24 is connected to the first air inlet 81. That is, the external gas enters the partial guide channel enclosed by the first guide surface 853 and the second guide surface 24 from the first air inlet 81, and then gradually flows along the partial guide channel enclosed by the first guide surface 853 and the second guide surface 24. Under the guiding effect of the partial guide channel enclosed by the first guide surface 853 and the second guide surface 24, the gas gradually converges and gradually forms a smooth and consistent airflow, thereby improving the smoothness of gas flow.

[0079] In a preferred embodiment, to further improve the gas guiding effect of the partial guiding channel formed by the first guiding surface 853 and the second guiding surface 24, and to further improve the smoothness of gas flow, the included angle α formed by the first guiding surface 853 and the second guiding surface 24 can specifically be 20-30°. The included angle β formed between the projection of the end face of the second guiding surface 24 perpendicular to the axis and the radial direction can be 10-15°; the included angle γ formed between the projection of the end face of the first guiding surface 853 perpendicular to the axis and the radial direction is 10-15°.

[0080] In some specific embodiments, the second guide surface 24 can be an inclined surface. For example, the second guide surface 24 gradually slopes towards the mounting bracket 8 along the gas flow direction, that is, the distance between the second guide surface 24 and the mounting bracket 8 gradually decreases along the gas flow direction. Therefore, after the gas flows into the guide channel 83 from the first air inlet 81, it will gradually converge to form a smooth and uniform gas flow under the guidance of the second guide surface 24. Furthermore, the first guide surface 853 of the guide portion 852 of the flange 85 facing the controller housing 2 can be an inclined surface. For example, the first guide surface 853 gradually slopes towards the controller housing 2 along the gas flow direction, that is, the distance between the first guide surface 853 and the controller housing 2 gradually decreases along the gas flow direction. Therefore, after the gas flows into the guide channel 83 from the first air inlet 81, it will gradually converge to form a smooth and uniform gas flow under the guidance of the first guide surface 853. Alternatively, only the second guide surface 24 can be configured as an inclined surface, and only the second guide surface 24 guides the gas; or only the first guide surface 853 can be configured as an inclined surface, and only the first guide surface 853 guides the gas; or both the second guide surface 24 and the first guide surface 853 can be configured as inclined surfaces, and both the second guide surface 24 and the first guide surface 853 are used together to guide the gas. To make the second guide surface 24 form an inclined surface, the end of the controller housing 2 facing the mounting bracket 8 can be an inverted frustum-shaped structure or an inverted cone-shaped structure; to make the first guide surface 853 form an inclined surface, the mounting bracket 8 can be an inverted frustum-shaped structure or an inverted cone-shaped structure.

[0081] In this application, the first guide surface 853 and the second guide surface 24 are respectively set as inclined surfaces. Firstly, they can guide the turbulent airflow over a larger area, improving the guiding efficiency and stability. Secondly, with a fixed radial length, the inclined surfaces can also maximize the guiding path and heat dissipation area, thereby better improving the heat dissipation effect of the airflow on the controller housing 2.

[0082] In some specific embodiments, the second guide surface 24 of the controller housing 2 facing the mounting bracket 8 includes a first portion 241 and a second portion 242 arranged sequentially along the gas flow direction. The projection of the first portion 241 along the motor axis can coincide with the projection of the first guide surface 853 of the flange portion 85 along the motor axis, and the projection of the second portion 242 along the motor axis can coincide with the portion of the end face extension of the rib 851 extending along the motor axis. When gas flows from the first air inlet 81 into the partial guide channel enclosed by the first portion 241 and the first guide surface 853, it is guided by the first portion 241 and the first guide surface 853, thereby improving the smoothness of gas flow. Then, under the guiding action of the first portion 241 and the first guide surface 853, the gas flows to contact the second portion 242, and under the guiding action of the second portion 242, the gas flows to the first air outlet 82. Through the guidance of the gas by the second portion 242, the gas can flow to the first air outlet 82 more evenly, improving the smoothness of gas flow. By performing graded flow guidance of the gas through the first part 241 and the second part 242, the heat dissipation effect between the gas and the controller housing 2 can be improved; and as the smoothness of the gas flow increases, the gas flow speed can also be faster, thereby accelerating the gas circulation speed and shortening the heat dissipation cycle.

[0083] In some specific embodiments, the flow guiding channel 83 includes a stabilizing zone 831 and a turbulent zone 832 that are interconnected along the radial direction of the motor. The inflow end of the turbulent zone 832 is connected to the first air inlet 81, and the cross-sectional shape of the turbulent zone 832 gradually decreases along the gas flow direction, driving the gas in the turbulent zone 832 to flow towards the end of the controller housing 2 facing the mounting bracket 8, thereby guiding the gas towards the controller housing 2, improving the heat dissipation effect of the gas on the controller housing 2, and the turbulent zone 832 can guide the gas to form a smooth and consistent airflow. The outflow end of the stabilizing zone 831 is connected to the first air outlet 82. After the gas forms a smooth and consistent airflow from the turbulent zone 832, it flows to the stabilizing zone 831, and then flows to the first air outlet 82 under the guidance of the stabilizing zone 831. By using the turbulent flow zone 832 and the steady flow zone 831 to guide the gas in stages, the heat dissipation effect between the gas and the controller housing 2 can be improved. Furthermore, as the smoothness of the gas flow increases, the gas flow speed can also be faster, thereby accelerating the gas circulation speed and shortening the heat dissipation cycle.

[0084] In some specific embodiments, the mounting bracket 8 can be made of plastic material. The plastic mounting bracket 8 has excellent heat insulation performance, which can prevent the controller housing 2 and the stator and rotor housing 1 from conducting heat through the mounting bracket 8. This allows the heat generated by the controller 21 installed in the controller housing 2 to be concentrated in the controller housing 2, and the heat generated by the stator 11 in the stator and rotor housing 1 to be concentrated in the stator and rotor housing 1, thus avoiding heat dispersion. Then, the controller housing 2 and the stator and rotor housing 1 are cooled by the gas flowing through them.

[0085] Further reference Figure 7 The controller housing 2 can be a controller housing, and the controller housing 2 has a receiving cavity 25 for accommodating the controller 21. The heat generated by the controller 21 located in the receiving cavity 25 is conducted to the controller housing 2, and then dissipated by the gas flowing in the guide channel 83, thereby achieving heat dissipation for the controller 21. Preferably, to improve the sealing effect of the controller 21, one end of the controller housing 2 facing the guide channel 83 is a fully sealed structure, and the receiving cavity 25 is sealed and separated from the guide channel 83 by the controller housing 2, improving the sealing performance of the controller 21, and allowing the heat generated by the controller 21 to be concentrated in the controller housing 2 and dissipated through the controller housing 2.

[0086] The connecting cavity formed by the controller housing 2 can be connected to the outside on the side away from the flow channel 83. In order to improve the sealing performance of the controller 21, the controller housing 2 can be connected with a controller end cover 23. The controller end cover 23 is placed on the controller 21 and abuts against the controller housing 2. The controller end cover 23 can separate the connecting cavity of the controller housing 2 from the outside to improve the sealing performance of the controller 21. The controller end cover 23 and the controller housing 2 together form an installation chamber for housing the controller 21.

[0087] The stator and rotor housing 1 houses the stator and rotor 11. The heat generated by the stator and rotor 11 is conducted to the stator and rotor housing 1, and then dissipated through the gas flowing through the stator and rotor housing 1, thereby achieving heat dissipation for the stator and rotor 11. To facilitate heat conduction, the controller housing 2 and the stator and rotor housing 1 can be made of metal materials with good thermal conductivity.

[0088] Further reference Figure 9 and Figure 11In some specific embodiments, the controller housing 2 has multiple heat dissipation ribs 26 protruding from the end facing the mounting bracket 8. For example, the heat dissipation ribs 26 protrude from the second guide surface 24 of the controller housing 2 toward the mounting bracket 8. The sidewalls of two adjacent heat dissipation ribs 26 form an independent branch flow path, which forms part of the guide channel 83. Each branch flow path can connect the first air inlet 81 and the first air outlet 82. When gas flows into the guide channel 83, it flows over the surface of the multiple heat dissipation ribs 26. Therefore, the arrangement of the heat dissipation ribs 26 can increase the contact area between the controller housing 2 and the gas, thereby improving the heat dissipation effect of the controller housing 2. Preferably, the multiple heat dissipation ribs 26 are evenly spaced; for example, when the outer periphery of the controller housing 2 is circular, the multiple heat dissipation ribs 26 can be arranged in an array around the axial direction of the controller housing 2.

[0089] The end face of the heat dissipation rib 26 can be contoured to the first guide surface 853. Specifically, the end of the heat dissipation rib 26 facing the first guide surface 853 has a similar shape to the first guide surface 853, so that the distance between the heat dissipation rib 26 and the first guide surface 853 along the motor axis is the same or substantially the same. By contouring the heat dissipation rib 26 to the first guide surface 853, the heat dissipation rib 26 can extend towards the first guide surface 853 to the maximum extent, increasing the surface area of ​​the heat dissipation rib 26, thereby increasing the contact area between the heat dissipation rib 26 and the gas, and improving the heat dissipation effect of the controller housing 2. In addition, by contouring the heat dissipation rib 26 to the first guide surface 853, the guiding effect of the heat dissipation rib 26 on the gas can also be improved, so that the gas is guided to flow along the extension direction of the guide channel 83.

[0090] The heat dissipation ribs 26 can be integrally formed with the second guide surface 24, and the heat dissipation ribs 26 can abut against the first guide surface 853 or be arranged close to the first guide surface 853, so that the gas in the adjacent branch flow path will not interfere or will only cause a small amount of interference, thereby avoiding or reducing the mutual interference of gas in the adjacent branch flow path and causing turbulence during gas flow, thus improving the smoothness of gas flow.

[0091] Further reference Figure 5The fan 9 generates power to guide the airflow from the first air outlet 82 towards the stator and rotor housing 1, allowing the gas to flow sequentially along the first air inlet 81, the guide channel 83, and the first air outlet 82, and then sequentially through the controller housing 2 and the stator and rotor housing 1. Specifically, the fan 9 can be positioned on the side of the mounting bracket 8 facing the stator and rotor housing 1, and the mounting bracket 8, fan 9, and stator and rotor housing 1 are arranged at intervals along the motor axis. The fan 9 can be mounted on the rotating shaft of the stator and rotor 11, allowing it to rotate synchronously with the shaft. The fan 9 has a second air inlet 95 and a second air outlet 96. The second air inlet 95 connects to the first air outlet 82 and can redirect the axially flowing airflow to radial flow before it exits through the second air outlet 96. The projection of the first air outlet 82 perpendicular to the radial direction covers the second air inlet 95, and the airflow from the first air outlet 82 flows into the second air inlet 95, ensuring that the airflow into the second air inlet 95 is always greater than or equal to a preset value.

[0092] Further reference Figure 13 In some specific embodiments, the fan 9 may include a connecting part 91, fan fins 92, a first fixing part 93, and a second fixing part 94. The connecting part 91, fan fins 92, first fixing part 93, and second fixing part 94 may be an integral structure. The connecting part 91 is fixedly connected to the rotating shaft of the stator and rotor 11, so that the stator and rotor 11 can drive the fan 9 to rotate through the connecting part 91. Multiple fan fins 92 are provided, arranged circumferentially on the connecting part 91, and spaced apart. A channel for gas flow is formed between adjacent fan fins 92. The channel formed between adjacent fan fins 92 extends radially. After flowing in from the second air inlet 95, the gas is guided radially through the channel formed between adjacent fan fins 92. A first fixing part 93 and a second fixing part 94 are axially spaced on opposite sides of the fan fin part 92. The first fixing part 93 is arranged around the outer edge of the fan fin part 92 and located on one side of the first air outlet 82, while the second fixing part 94 is arranged around the root of the fan fin part 92. The notch between the first fixing part 93 and the connecting part 91 forms a second air inlet 95, and the notch between the outer edges of the first fixing part 93 and the outer edges of the second fixing part 94 forms a second air outlet 96. The second air inlet 95 is a horizontal opening, while the second air outlet 96 can be an inclined opening.

[0093] To facilitate the installation of the fan 9, an installation space for accommodating the fan 9 is formed between the flange portion 85 and the stator and rotor housing 1. Specifically, an installation space for accommodating the fan 9 is formed between the first end face 854 of the flange portion 85 facing the stator and rotor housing 1 and the stator and rotor housing 1, and the depth of the installation space along the motor axis can be greater than the height of the fan 9, so that the flange portion 85, the fan 9 and the stator and rotor housing 1 can be arranged sequentially at intervals along the motor axis.

[0094] Further reference Figure 12 and Figure 13 To guide the gas flowing from the first air outlet 82 toward the fan 9, a first protrusion 84 protruding toward the first fixing part 93 is provided on the mounting bracket 8 near the first air outlet 82. A corresponding second protrusion 931 is provided on the first fixing part 93. The first protrusion 84 is radially arranged around the outside of the second protrusion 931 and extends axially to be flush with or beyond the end face of the first protrusion 84, thus forming an airflow channel. The first protrusion 84 and the second protrusion work together to block the flow of gas along the radial direction of the motor, thereby allowing the gas to flow toward the fan 9 along the axial direction of the motor. The first protrusion 84 and the second protrusion 931 can be annular protrusions, and the axial directions of the first protrusion 84 and the second protrusion 931 can coincide with the axial direction of the fan 9. The first protrusion 84 can be specifically arranged around the periphery of multiple first air outlets 82, and the fan 9 can be provided with multiple second air inlets 95 for allowing gas to flow into the fan 9. The second protrusion 931 can be specifically arranged around the periphery of multiple second air inlets 95.

[0095] The end face of the first protrusion 84 facing the fan 9 is flush with the end face of the second protrusion 931 facing the mounting bracket 8. That is, the first protrusion 84 is radially arranged around the outside of the second protrusion 931 and extends axially to be flush with the end face of the first protrusion 84. Alternatively, the first protrusion 84 and the second protrusion 931 are at least partially stacked along the radial direction of the motor. That is, the first protrusion 84 is radially arranged around the outside of the second protrusion 931 and extends axially beyond the end face of the first protrusion 84. Therefore, the movement of gas along the radial direction of the motor at the position between the first air outlet 82 and the fan 9 is mostly blocked by the first protrusion 84 or the second protrusion 931. The first protrusion 84 and the second protrusion 931 work together to achieve a wicking effect, allowing almost all the gas to flow into the fan 9. The first protrusion 84 and the second protrusion 931 are spaced apart along the radial direction of the motor, and the second protrusion 931 can be closer to the inner side of the motor than the first protrusion 84.

[0096] To secure the mounting bracket 8 to the controller housing 2 and the stator / rotor housing 1, the mounting bracket 8 is provided with a first locking hole 87 and a second locking hole 88. The first locking hole 87 is located at the end of the mounting bracket 8 facing the controller housing 2, for example, at the edge of the flange portion 85 of the mounting bracket 8. The first locking hole 87 can be used to achieve a fixed connection between the mounting bracket 8 and the controller housing 2. Specifically, the controller housing 2 is provided with a first mating hole that can communicate with the first locking hole 87. When the first mating hole of the controller housing 2 communicates with the first locking hole 87 of the mounting bracket 8, a locking element can be passed through the first mating hole and the first locking hole 87 and fixedly connected to the controller housing 2 or the mounting bracket 8, for example, by threaded connection, thereby achieving a fixed connection between the controller housing 2 and the mounting bracket 8. The locking element can be a screw.

[0097] The second locking hole 88 is located at the end of the mounting bracket 8 facing away from the controller housing 2. For example, the second locking hole 88 is located at the end of the side wall 86 of the mounting bracket 8 facing away from the controller housing 2. The second locking hole 88 can be used to achieve a fixed connection between the mounting bracket 8 and the stator / rotor housing 1. Specifically, the stator / rotor housing 1 is provided with a second mating hole that can communicate with the second locking hole 88. When the second mating hole of the stator / rotor housing 1 communicates with the second locking hole 88 of the mounting bracket 8, a locking element can be passed through the second mating hole and the second locking hole 88 and fixedly connected to the stator / rotor housing 1 or the mounting bracket 8, for example, by threaded connection, thereby achieving a fixed connection between the stator / rotor housing 1 and the mounting bracket 8. The locking element can be a screw.

[0098] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A motor that can be easily disassembled and assembled, characterized in that, It includes: Stator and rotor housing (1), wherein the stator and rotor housing (1) houses the stator and rotor (11). A controller housing (2) houses a controller (21). The connector (3) is electrically connected at one end to the stator and rotor (11) and extends to the outside of the controller housing (2) at the other end. A conductive element (4) is provided, one end of which is located on the outside of the controller housing (2) and electrically connected to the connector (3), and the other end of which is located on the inside of the controller housing (2) and electrically connected to the controller (21), so that the connector (3) is electrically connected to the controller (21) through the conductive element (4). The connector (3) is detachably connected to the conductor (4), and / or the conductor (4) is detachably connected to the controller housing (2), and / or the conductor (4) is detachably connected to the controller (21).

2. The motor according to claim 1, characterized in that, The connector (3) includes a connecting wire, one end of which extends to the inside of the stator and rotor housing (1) and is electrically connected to the stator and rotor (11); The motor also includes a seal (5) for sealing the connection between the connecting wire and the stator and rotor housing (1).

3. The motor according to claim 2, characterized in that, The stator and rotor housing (1) is provided with a notch (12) that penetrates the stator and rotor housing (1); the seal (5) seals the notch (12), and the seal (5) is provided with a sealing hole (51) for the connecting wire to pass through; one end of the connecting wire passes through the sealing hole (51) and extends into the interior of the stator and rotor housing (1).

4. The motor according to claim 2, characterized in that, The connecting wire extends to the outside of the stator and rotor housing (1) and is bent to form a first bend (31); a guide component (6) is provided on the side of the seal (5) facing the outside, and the guide component (6) is used to guide and maintain the bending angle of the first bend (31).

5. The motor according to claim 4, characterized in that, The guide assembly (6) includes a connector (61) and a guide (62). The connector (61) is provided with a connection hole (611) for the connecting wire to pass through. The guide (62) and the connector (61) form a receiving space (63) that communicates with the connection hole (611) and is used to receive the first bend (31). The guide (62) is pressed onto the connecting wire to guide and maintain the bending angle of the first bend (31).

6. The motor according to claim 5, characterized in that, The guide (62) is used to press the included angle formed between the pressing end face (621) of the connecting wire and the connecting hole (611), which is the same as the bending angle of the first bending part (31); And / or, the guide assembly (6) further includes a first mounting member (64) and a second mounting member (65), the first mounting member (64) being used to lock the connector (61) to the stator and rotor housing (1); the guide member (62) being connected to the connector (61) via the second mounting member (65) and pressing the connecting wire.

7. The motor according to claim 4, characterized in that, The motor is provided with a guide channel (7) that communicates with the outside world. The connecting wire forms the first bend (31) and then passes through the guide channel (7) and extends toward the controller housing (2). The extension direction of the first bend (31) is consistent with the length direction of the guide channel (7).

8. The motor according to claim 4, characterized in that, One end of the connecting wire near the controller housing (2) is bent toward the controller housing (2) to form a second bend (32). After forming the second bend (32), the connecting wire extends to the outside of the controller housing (2) and is electrically connected to the conductor (4).

9. The motor according to claim 3, characterized in that, The stator and rotor housing (1) includes a first main body shell (13) with one end open and a stator and rotor end cap (14) covering the opening of the first main body shell (13); the notch (12) is opened in the first main body shell (13) and extends to the stator and rotor end cap (14), and the stator and rotor end cap (14) and the first main body shell (13) together clamp the seal (5). The sealing element (5) has an embedding groove (52) formed on it, and the inner wall of the embedding groove (52) abuts against the inner and outer walls of the first main body shell (13).

10. The motor according to claim 9, characterized in that, The controller housing (2) includes a second main body shell (22) with one end open and a controller end cover (23) covering the second main body shell (22). The connecting wire extends to the outside of the controller end cover (23), and the conductor (4) passes through the controller end cover (23) to be electrically connected to the controller (21).

11. The motor according to claim 9, characterized in that, The conductive component (4) is a metal screw.

12. The motor according to claim 10, characterized in that, It also includes a mounting bracket (8), the controller housing (2) and the stator and rotor housing (1) are detachably disposed at opposite ends of the mounting bracket (8) along the axial direction, the mounting bracket (8) is provided with a first air inlet (81) communicating with the outside and a first air outlet (82) communicating with the stator and rotor housing (1), wherein a flow guide channel (83) is constructed between the mounting bracket (8) and the controller housing (2), the airflow through the first air inlet (81) flows into the flow guide channel (83) and flows out of the first air outlet (82).

13. The motor according to claim 12, characterized in that, The mounting bracket (8) is made of plastic, while the first main body shell (13) and the second main body shell (22) are made of metal.

14. The motor according to claim 12, characterized in that, The first air inlet (81) passes through the mounting bracket (8) radially along the motor, and the flow guide channel (83) extends radially from the first air inlet (81) to the first air outlet (82) along the motor. The cross-sectional area of ​​the flow guide channel (83) gradually decreases along the gas flow direction.

15. The motor according to claim 12, characterized in that, It also includes a fan (9), which is disposed on the side of the mounting bracket (8) facing the stator and rotor housing (1), and the fan (9) guides the airflow from the first air outlet (82) to the stator and rotor housing (1).

16. The motor according to claim 15, characterized in that, The fan (9) includes a connecting part (91), a fan fin part (92), a first fixing part (93), and a second fixing part (94). The connecting part (91) is fixedly connected to the rotating shaft of the stator and rotor (11); The number of fan wing portions (92) is provided in multiples, and the multiple fan wing portions (92) are arranged circumferentially on the connecting portion (91); The first fixing part (93) and the second fixing part (94) are axially spaced on opposite sides of the fan fin (92), wherein the first fixing part (93) is arranged around the outer edge of the fan fin (92) and located on one side of the first air outlet (82), and the second fixing part (94) is arranged around the root of the fan fin (92). The gap between the first fixing part (93) and the connecting part (91) forms the second air inlet (95), and the gap between the outer edge of the first fixing part (93) and the outer edge of the second fixing part (94) forms the second air outlet (96).

17. The motor according to claim 16, characterized in that, The projection of the first air outlet (82) in the radial direction covers the second air inlet (95), so that the airflow in the second air inlet (95) is greater than or equal to a preset value in real time.

18. The motor according to claim 16, characterized in that, The mounting bracket (8) has a first protrusion (84) protruding towards the first fixing part (93) near the first air outlet (82). The first fixing part (93) has a corresponding second protrusion (931). The first protrusion (84) is radially arranged around the outside of the second protrusion (931) and axially extends to be flush with or beyond the end face of the first protrusion (84) to form an airflow channel.

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