Air guide structure and integrated motor

Abstract

The invention relates to the technical field of motor heat dissipation, in particular to an air guide structure and an integrated motor, the air guide structure comprises an electric controller and a casing, and the electric controller is configured in the casing; a plurality of air inlets corresponding to the electric controller are formed in the machine shell, an air guide plate is further arranged on the peripheral side of the electric controller in the machine shell, and the air guide plate is used for blocking on the peripheral side, so that airflow entering from the air inlets is guided to the electric controller. According to the air guide structure and the integrated motor, reliable heat dissipation of the electric controller can be achieved, heat dissipation of the motor assembly and the speed reducer can be achieved through reasonable structural arrangement, the heat dissipation effect is good, and the structure is compact and small.

Description

Technical Field

[0001] This invention relates to the field of motor heat dissipation technology, specifically to an air guide structure and an integrated motor. Background Technology

[0002] An integrated motor is a type of motor that integrates the motor body, electronic controller, and reducer into one unit. Its compact structure saves a lot of installation space, simplifies assembly, and helps improve production efficiency. It is widely used in power tools, robots, new energy vehicles and other fields.

[0003] In existing integrated motors, a fan blade is typically mounted on the rotating shaft within the motor body. When the shaft rotates, the fan blade also rotates, thereby driving airflow. The air passes sequentially through the electronic controller, the motor body, and the reducer to dissipate heat from each component.

[0004] Among these components, the electronic controller is the most sensitive to temperature and requires reliable heat dissipation. However, in related technologies, air inlets are only provided on the housing used to install the electronic controller, allowing airflow to enter. When the corresponding installation space inside the housing is large, only a portion of the airflow passes through the electronic controller and exchanges heat with the controller and its components. A significant amount of airflow remains around the outer periphery of the electronic controller without exchanging heat with it, resulting in poor heat dissipation for the controller. Summary of the Invention

[0005] To address the technical problem of poor heat dissipation in existing electronic controllers, this invention proposes an air-guiding structure and an integrated motor, which can achieve reliable heat dissipation of the electronic controller. Furthermore, through a reasonable structural arrangement, it can also achieve heat dissipation of the motor components and reducer, resulting in good heat dissipation performance.

[0006] The technical solution of the present invention:

[0007] An air guiding structure, comprising:

[0008] An electronic controller, which is disposed within a housing;

[0009] The housing has several air inlets corresponding to the electronic controller. Inside the housing, a guide plate is also provided on the periphery of the electronic controller. The guide plate is used to block the airflow entering from the air inlets and guide it to the electronic controller.

[0010] Furthermore, the air inlet includes a first air inlet and a second air inlet. The first air inlet is provided on the front surface of the housing opposite to the electronic controller. The second air inlet is provided on the housing corresponding to the periphery of the electronic controller. The air guide plate is provided corresponding to the second air inlet. The second air inlet is provided on the front surface and / or side surface of the housing.

[0011] Furthermore, the housing is provided with an electrical control cavity and a motor cavity. The electrical control cavity is used to house the electrical controller, and the motor cavity is used to house the motor assembly, which includes a stator and a rotor. The electrical control cavity is located on the radial side of the motor cavity, and the rear side of the electrical control cavity and the rear side of the motor cavity form a communicating space.

[0012] The motor cavity is also equipped with a fan blade, which is mounted on the rotor shaft as the rotor rotates. When the fan blade rotates with the shaft, the airflow passes through the electronic controller in the electronic control cavity, then through the connecting space, and then through the stator and rotor before being blown out.

[0013] Furthermore, a wind baffle ring is provided inside the motor cavity. The wind baffle ring is located on the rear side of the fan blade. The outer ring at the rear end of the wind baffle ring forms a blocking part, forcing the airflow to pass through the flow port in the middle. The fan blade is a centrifugal fan blade, and the outer ring at the front end of the wind baffle ring forms an arc-shaped guide part.

[0014] Furthermore, the electronic control cavity is located above the motor cavity; the fan blade and the wind deflector are located on the front side of the stator.

[0015] Furthermore, the air guide structure also includes a connecting cover, which is disposed on the front side of the housing; the connecting cover has a blocking edge in the middle, which separates the air inlet space and the air outlet space, the air inlet space corresponding to the electronic control cavity, and the air outlet space corresponding to the motor cavity;

[0016] Lateral air inlet slots are formed on the left and right sides of the air inlet space, and lateral air outlet slots are formed on the left and right sides of the air outlet space.

[0017] Both ends of the blocking edge have extension sections facing the air outlet space, and the inner side of the end of the extension section has a guide arc surface.

[0018] Furthermore, the air guide structure also includes a gearbox, and the connecting cover is disposed between the gearbox and the housing. One side of the connecting cover is sealed to the gearbox, and the other side of the connecting cover is connected to the housing.

[0019] The gearbox contains a gear set, and the front end of the rotating shaft extends into the gearbox through the connecting cover. The input gear in the gear set is connected to the front end of the rotating shaft as it rotates, and the output gear in the gear set is connected to the output shaft as it rotates. The connecting cover is also provided with a forward air outlet slot for allowing airflow to be blown to the outside of the gearbox.

[0020] Furthermore, the electronic controller includes an electronic control box and an electronic control board, with the electronic control board mounted on the electronic control box; the electronic control cavity is provided with a left limiting part, a right limiting part, an upper limiting part, a lower limiting part, and a front limiting part for limiting the electronic control box; the rear side of the housing is provided with a rear cover, and the rear cover is provided with a pressure plate for pressing the electronic control box on the rear side;

[0021] The housing and rear cover are made of plastic, while the connecting cover and gearbox are made of metal.

[0022] Furthermore, the electronic control board is also provided with a heat sink, and a portion of the electronic control board is installed inside the opening of the electronic control box;

[0023] The air guide plate is disposed on the left and right sides of the electrical control box. The air guide plate includes a first air guide plate and a second air guide plate. The first air guide plate is used to block the airflow at the rear, and the second air guide plate is used to block the airflow at the bottom, so as to guide the airflow to the part of the electrical control plate that protrudes from the electrical control box.

[0024] The left and right sides of the electrical control box are formed with pressing edges, and the upper limit part is provided on the second air guide plate.

[0025] In another aspect, the present invention provides an integrated motor including an air guide structure as described in any of the above claims.

[0026] By adopting the above technical solution, the air guide structure and integrated motor provided by the present invention have the following advantages compared with the prior art:

[0027] 1. The air guiding structure of the present invention has an air guiding plate on the periphery of the air inlet section of the electronic controller. The cold air entering from the air inlet is blown towards the air inlet section of the electronic controller under the action of the air guiding plate. Furthermore, under the action of the air guiding plate, the air flow in the air outlet section of the electronic controller is accelerated, thereby greatly improving the heat dissipation effect of the electronic controller.

[0028] 2. The air guide structure of the present invention, through a reasonable structural arrangement, places the electronic control cavity above the motor cavity, so that the airflow forms an approximately U-shaped flow trajectory in the casing, and a forward air outlet groove is provided on the connecting cover, so that the airflow can pass through the electronic controller, motor assembly and reducer for heat dissipation, resulting in better overall heat dissipation effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the housing of the present invention from a first-view perspective;

[0030] Figure 2 This is a schematic diagram of the housing of the present invention from a second perspective;

[0031] Figure 3 This is a schematic diagram of the structure of the electronic controller of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the motor assembly of the present invention;

[0033] Figure 5 This is a schematic diagram of the windshield ring of the present invention;

[0034] Figure 6 This is a schematic diagram of the housing, electronic controller, and motor assembly of the present invention from a first-view perspective.

[0035] Figure 7 This is a schematic diagram of the housing, electronic controller, and motor assembly of the present invention from a second perspective.

[0036] Figure 8 This is a perspective view of the integrated motor of the present invention from a first-view perspective.

[0037] Figure 9 This is a perspective view of the integrated motor of the present invention from a second viewpoint.

[0038] Figure 10 This is a cross-sectional view of the integrated motor of the present invention;

[0039] Figure 11 This is an exploded view of the integrated motor of the present invention from a first-view perspective.

[0040] Figure 12 This is an exploded view of the integrated motor of the present invention from a second perspective;

[0041] Figure 13 This is a schematic diagram of the connecting cover of the present invention from a first perspective;

[0042] Figure 14 This is a schematic diagram of the connecting cover of the present invention from a second perspective;

[0043] Figure 15 This is a schematic diagram of the gearbox structure of the present invention.

[0044] in,

[0045] Controller 1, control box 11, pressing edge 111; control board 12, PCB board 121, components 122, heat sink 123;

[0046] Casing 2, air inlet 21, first air inlet 211, second air inlet 212; air guide plate 22, first air guide plate 221, second air guide plate 222, extension plate 223; electrical control cavity 23, left limiting part 231, right limiting part 232, upper limiting part 233, lower limiting part 234, front limiting part 235; motor cavity 24, motor assembly 241, stator 2411, rotor 2412, rotating shaft 2413, fan blade 242, wind baffle ring 243, blocking part 2431, flow port 2432, arc-shaped guide part 2433, connecting space 25;

[0047] Rear cover 3, pressure plate 31, cable inlet 32, multi-functional cover 33;

[0048] Reducer 4, gearbox 41, gear set 42, input gear 421, output gear 422, output shaft 43, locking element 44;

[0049] Connecting cover 5, first positioning block 51, second positioning block 52, blocking edge 53, extension section 54, guide arc surface 541, air inlet space 55, air outlet space 56, lateral air inlet slot 57, lateral air outlet slot 58, and forward air outlet slot 59.

[0050] First connecting hole 61, second connecting hole 62;

[0051] First bearing 71, second bearing 72, rectangular rubber ring 73, pressure cap 74;

[0052] Install flange 81, install base plate 82. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0056] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0057] like Figure 1-7 As shown, this embodiment provides an air guide structure for use in integrated industrial variable frequency motors. The air guide structure includes an electronic controller 1 and a housing 2. The electronic controller 1 is configured and installed inside the housing 2. The electronic controller 1 includes an air inlet section and an air outlet section. The air inlet section is the front half of the electronic controller 1 that contacts the incoming cold air, and the air outlet section is the rear half of the electronic controller 1. The incoming cold air can be cooled by sequentially passing through the air inlet section and the air outlet section of the electronic controller 1. The length and range of the air inlet section can be set as needed.

[0058] The housing 2 is provided with a plurality of air inlets 21 corresponding to the air inlet section of the electronic controller 1. Inside the housing 2, in the direction around the air inlet section of the electronic controller 1 (excluding the front and rear sides), there are also air guide plates 22. These air guide plates 22 are used to block the airflow around the electronic controller 1, so that the airflow entering from the air inlets 21 is directed to the air inlet section of the electronic controller 1.

[0059] In some scenarios, due to design requirements or overall installation space constraints, the installation space within the housing 2 for the electronic controller 1 may be relatively large, causing a significant amount of airflow to flow directly from the periphery of the electronic controller 1 to the rear. To address this, this embodiment employs an air guide structure with an air guide plate 22 on the periphery of the air inlet section of the electronic controller 1. The cold air entering from the air inlet 21 is directed towards the air inlet section of the electronic controller 1 by the air guide plate 22. Furthermore, the air guide plate 22 accelerates the airflow in the air outlet section of the electronic controller 1, thereby greatly improving the heat dissipation effect of the electronic controller 1.

[0060] In this embodiment, the air inlet 21 includes a first air inlet 211 and a second air inlet 212. The first air inlet 211 is disposed on the front surface of the housing 2 opposite to the front end of the electronic controller 1. The second air inlet 212 is disposed on the periphery of the air intake section of the electronic controller 1 on the housing 2. The second air inlet 212 can be disposed on the front end surface and / or the side surface of the housing 2. The second air inlet 212 can be one or more sets. For example, in this embodiment, there are two sets, respectively disposed on the left and right sides of the air intake section of the electronic controller 1. The set of second air inlets 212 on the left side consists of two sets, respectively disposed on the left and left sides of the front end surface of the housing; the set of second air inlets 212 on the right side consists of two sets, respectively disposed on the right side of the front end surface of the housing. Preferably, the top of the left and right sides of the housing 2 is arc-shaped, that is, the two second air inlets 212 on the side are arc-shaped, so that they are closer to the electronic controller 1. In this embodiment, there are two air guide plates 22, corresponding to two sets of second air inlets 212. In this way, by simultaneously setting the first air inlet 211 and the second air inlet 212, the air intake area is increased; and the air guide plates 22 ensure that all the airflow entering through the second air inlet 212 is guided from the side to the electronic controller 1, thereby improving the heat dissipation effect.

[0061] In this embodiment, the housing 2 is provided with an electrical control cavity 23 for mounting the electrical controller 1. Specifically, as shown... Figure 3 As shown, the electronic controller 1 includes an electronic control box 11 and an electronic control board 12. The top of the electronic control box 11 is open. The electronic control board 12 includes a PCB board 121 and its components 122. The PCB board 121 can be assembled to the electronic control box 11 by means of snap-fit ​​or other methods, and then glue can be applied to assist in fixing it.

[0062] Furthermore, such as Figure 2 and Figure 7 As shown, the electrical control cavity 23 is provided with a left limiting part 231 and a right limiting part 232 to limit the left and right directions of the electrical control box 11. The left limiting part 231 and the right limiting part 232 may be, but are not limited to, limiting ribs formed inside the housing 2. The electrical control cavity 23 is also provided with an upper limiting part 233 and a lower limiting part 234 to limit the up and down directions of the electrical control box 11. The upper limiting part 233 and the lower limiting part 234 may be, but are not limited to, limiting ribs formed inside the housing 2. The electrical control cavity 23 is also provided with a front limiting part 235 to limit the front side of the electrical control box 11. The front limiting part 235 may be, but is not limited to, a limiting rib formed inside the housing 2. Through the front limiting part 235, the lower part of the first air inlet 211 can also be separated from the electrical controller 1 by a certain distance to facilitate air circulation. Figure 8-12As shown, the rear of the electrical control cavity 23 is provided with an installation port for inserting the electrical controller 1. The air guide structure of this embodiment also includes a rear cover 3, on which a pressure plate 31 is provided. When the rear cover 3 is connected to the housing 2, the pressure plate 31 presses against the rear side of the electrical control box 11, thereby fixing the electrical controller 1 inside the electrical control cavity 23. With this installation method, the electrical control box 11 does not need to be fixed with screws, making disassembly and assembly convenient.

[0063] Furthermore, such as Figure 3 In this embodiment, the control board 12 is also provided with a heat sink 123. The heat sink 123 can be fixedly connected to power devices such as IGBTs that generate a lot of heat to improve the heat dissipation effect. A part of the control board 12 is installed in the opening of the control box 11. For example, only the PCB board 121, components 122 and a part of the heat sink 123 are placed in the opening, and the rest protrudes from the control box 11 to fully exchange heat with the airflow.

[0064] like Figure 6-7 As shown, in this embodiment, the air guide plates 22 are disposed on the left and right sides of the electrical control box 11. Each air guide plate 22 includes a first air guide plate 221 and a second air guide plate 222. The first air guide plate 221 is used to block the airflow at the rear of the second air inlet 212, and the second air guide plate 222 is used to block the airflow at the bottom of the second air inlet 212, thereby guiding the airflow from the side to the portion of the electrical control plate 12 that protrudes from the electrical control box 11. Preferably, the air guide plate further includes an extension plate 223 extending backward from the inner edge of the first air guide plate 221 and downward from the inner edge of the second air guide plate 221. When the front-to-back length of the electrical controller 1 is relatively long, for example, greater than the front-to-back length of the second air guide plate 222, the extension plate 223 further guides the airflow; when the vertical height of the electrical controller 1 is relatively large, for example, greater than the vertical height of the first air guide plate 221, the extension plate 223 further guides the airflow, thereby achieving a better air guiding effect.

[0065] Furthermore, the left and right sides of the electrical control box 11 are formed with pressing edges 111, and the pressing edges 111 are provided with mounting holes. In the prior art, the electrical controller 1 is generally installed through these mounting holes. In this embodiment, the pressing edges 111 are used, and an extension plate 223 is provided at the bottom of the second air guide plate 222 to form the aforementioned upper limit part 233, thereby limiting the pressing edges 111 of the electrical control box 11.

[0066] like Figure 1 , 10As shown in Figure -12, in this embodiment, the housing 2, in addition to the electrical control cavity 23, also has a motor cavity 24. The electrical control cavity 23 is used to house the electrical controller 1, and the motor cavity 24 is used to house the motor assembly 241. The motor assembly 241 includes at least a stator 2411 and a rotor 2412. The electrical control cavity 23 is located on the radial side of the motor cavity 24, for example, above the motor cavity 24. This arrangement makes the structure more compact. The partition between the electrical control cavity 23 and the motor cavity 24 does not contact the rear cover 3, thereby forming a communicating space 25 between the rear side of the electrical control cavity 23 and the rear side of the motor cavity 24.

[0067] Furthermore, the front side of the motor cavity 24 is provided with a mounting port, through which the motor assembly 241 can be installed. The motor cavity 24 also contains a fan blade 242, which is mounted on the rotating shaft 2413 of the rotor 2412. When the motor shaft 2413 rotates, the fan blade 242 rotates with it, and the airflow enters from the air inlet 21 on the housing 2, passes through the electronic controller 1 in the electronic control cavity 23, then through the connecting space 25, and then through the gaps between the stator 2411 and the housing 2, as well as the gaps between the rotating shaft 2413 and the stator 2411, before being blown forward. This airflow structure creates an approximately U-shaped flow trajectory within the housing 2, passing through the entire electronic controller 1 and the motor assembly 241, effectively dissipating heat from both components; moreover, the cool air first contacts the electronic controller 1, ensuring reliable heat dissipation for the electronic controller 1.

[0068] Preferably, a baffle ring 243 is also provided inside the motor cavity 24, and the baffle ring 243 is located on the rear side of the fan blade 242. The outer ring of the rear end of the baffle ring 243 forms a blocking part 2431, which facilitates the formation of negative pressure when the fan blade 242 rotates, allowing airflow to pass through the flow port 2432 in the middle of the baffle ring 243. The fan blade 242 is a centrifugal fan blade 242, which continues to blow the airflow from the middle to the radially outward; the outer ring of the front end of the baffle ring 243 forms an arc-shaped guide part 2433, which then allows the airflow to continue to flow forward. The fan blade 242 and the baffle ring 243 are preferably located on the front side of the stator 2411, and the baffle ring 243 and the stator 2411 can be fixedly connected together in the housing 2.

[0069] The air guide structure in this embodiment also includes a speed reducer 4, forming an integrated motor. Specifically, as shown... Figure 8-12 and Figure 15The reducer 4 includes a gearbox 41, and a gear set 42 is provided inside the gearbox 41. The front end of the rotating shaft 2413 extends into the gearbox 41. The gear set 42 includes an input gear 421, an output gear 422 and an intermediate gear. The input gear 421 is rotated and is disposed at the front end of the rotating shaft 2413. The output gear 422 is rotated and is disposed on the output shaft 43. When the rotating shaft 2413 rotates, the output shaft 43 is driven to rotate through the gear set 42.

[0070] Furthermore, such as Figure 10-14 The integrated motor also includes a connecting cover 5, which is located on the front side of the housing 2, between the gearbox 41 and the housing 2. One side of the connecting cover 5 is sealed to the gearbox 41 by a sealing ring and covers the opening of the gearbox 41, which is filled with oil. One side of the connecting cover 5 is provided with multiple first positioning blocks 51, such as... Figure 14 Five are shown, which are positioned by engaging with the edge of the opening on the gearbox 41 during installation; first bearings 71 are respectively installed on one side of the connecting cover 5 and on both ends of the gearbox 41 corresponding to the output shaft 43. The other side of the connecting cover 5 is connected to the housing 2 and covers the mounting opening of the motor cavity 24; multiple second positioning blocks 52 are provided on the other side of the connecting cover 5, such as... Figure 13 Six bearings are shown, which are positioned by fitting with the edge of the mounting opening of the motor cavity 24 of the housing 2 during installation. Second bearings 72 are installed on the other side of the connecting cover 5 and at both ends of the rotating shaft 2413 within the motor cavity 24 of the housing 2. Rectangular rubber rings 73 are provided on the outer side of the second bearings 72 to eliminate clearance. In this embodiment, the gearbox 41 and the housing 2 are connected via the connecting cover 5, making installation convenient.

[0071] like Figure 13 As shown, in this embodiment, the connecting cover 5 has a horizontally arranged blocking edge 53 in the middle, which divides the space into an air inlet space 55 and an air outlet space 56. The air inlet space 55 is located at the upper part and corresponds to the electronic control cavity 23; the air outlet space 56 is located at the lower part and corresponds to the motor cavity 24. The blocking edge 53 prevents the relatively hot airflow blown out from the motor cavity 24 from directly entering the electronic control cavity 23, thereby ensuring reliable heat dissipation of the electronic controller 1.

[0072] Furthermore, the top of the air intake space 55 is flush with the housing 2, and lateral air intake slots 57 are formed only on the left and right sides. Airflow enters the air intake space 55 from the lateral air intake slots 57 and then enters the electrical control cavity 23. The bottom of the air outlet space 56 is flush with the housing 2, and lateral air outlet slots 58 are formed only on the left and right sides. Airflow blown out by the motor cavity 24 passes through the air outlet space 56 and is blown out from the lateral air outlet slots 58. The left and right ends of the blocking edge 53 form extension sections 54 extending downward toward the air outlet space 56. The inner side of the extension section 54 forms a guide arc surface 541, which can guide the airflow, for example, to guide it downward, so that it is blown out from the lateral air outlet slots 58. The extension section 54 increases the distance between the lateral air outlet slots 58 and the lateral air intake slots 57, making it more difficult for the airflow blown out from the lateral air outlet slots 58 to enter the air intake space 55 from the lateral air intake slots 57. The part of the connecting cover 5 that contacts the housing 2 needs to be precision machined.

[0073] like Figure 8-9 As shown, in this embodiment, the left and right sides of the connecting cover 5 protrude from the housing 2, thereby preventing the side air inlet slot 57 and the side air outlet slot 58 from being blocked or clogged and difficult to clean, ensuring effective air intake and exhaust.

[0074] Preferably, such as Figure 13-15 The bottom of the connecting cover 5 is also provided with a forward air outlet slot 59 that allows airflow to blow forward toward the outside of the gearbox 41. The fan blade 242 can be configured as a combination of centrifugal and axial fan blades. In this way, in addition to passing through the electronic controller 1 and the motor assembly 241, the airflow also passes through the gearbox 41 for heat dissipation.

[0075] In this embodiment, the housing 2 and rear cover 3 are made of plastic, which improves the pressure resistance. A metal insert can be added to the outer periphery of the second bearing 72 located on the rear side inside the housing 2 for reinforcement, improving stability. The connecting cover 5 and gearbox 41 are preferably made of metal. In this embodiment, a mounting flange 81 is provided at the front end of the gearbox 4, and a mounting base plate 82 is provided at the bottom of the connecting cover 5 and housing 2. This integrated motor can be installed using either the mounting flange 81 or the mounting base plate 82, offering flexible installation options. The rear cover 3 in this embodiment has several cable inlet holes 32, which can be sealed as needed. The bottom of the rear cover 3 also has a multi-functional cover plate 33, which can integrate functions such as display and speed control as needed.

[0076] The integrated motor in this embodiment, such as Figure 10As shown, during installation, the fan blade 242 is first assembled onto the shaft 2413 of the rotor 2412. The front end of the shaft 2413 passes through the connecting cover 5, and the second bearing 72 is fixed on the other side of the connecting cover 5 by a pressure cap 74. The input gear 421 is fitted onto the front end of the shaft 2413 and locked by a locking member 44, preferably a hard lock nut, to ensure reliable locking when the motor rotates in both directions. The stator 2411 and the wind baffle ring 243 are fixedly installed inside the motor cavity 24 of the housing 2. The stator 2411 is fitted onto the rotor 2412, which is already installed on the connecting cover 5. Then, the connecting cover 5 is fixed to the housing 2 through the first connecting hole 61 on the housing 2. The first connecting hole 61 on the housing 2 can be fitted with a nut insert as needed for easy installation. Next, the output shaft 43, the first bearing 71, and other gears are installed inside the gearbox 41. Then, the connecting cover 5 and the gearbox 41 are fixed together through the second connecting hole 62 on the connecting cover 5. The second connecting hole 62 on the connecting cover 5 can be a threaded hole. Finally, the electronic controller 1 and the rear cover 3 can be installed from the rear.

[0077] As can be seen from the above, the air guide structure and integrated motor provided in this embodiment can achieve reliable heat dissipation of the electronic controller. In addition, through reasonable structural arrangement, heat dissipation of the motor assembly and reducer can also be achieved. The heat dissipation effect is good, and the structure is compact and small.

[0078] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An air guiding structure, characterized in that, include: An electronic controller (1) is disposed within a housing (2); The housing (2) has several air inlets (21) corresponding to the electronic controller (1). Inside the housing (2), there is also a guide plate (22) on the periphery of the electronic controller (1). The guide plate (22) is used to block the airflow from the air inlets (21) and guide it to the electronic controller (1).

2. The air guiding structure according to claim 1, characterized in that, The air inlet (21) includes a first air inlet (211) and a second air inlet (212). The first air inlet (211) is provided on the front surface of the housing (2) opposite to the front end of the electronic controller (1). The second air inlet (212) is provided on the housing (2) corresponding to the periphery of the electronic controller (1). The air guide plate (22) is provided corresponding to the second air inlet (212). The second air inlet (212) is provided on the front end and / or side surface of the housing (2).

3. The air guiding structure according to claim 1 or 2, characterized in that, The housing (2) is provided with an electrical control cavity (23) and a motor cavity (24). The electrical control cavity (23) is used to house the electrical controller (1), and the motor cavity (24) is used to house the motor assembly (241). The motor assembly (241) includes a stator (2411) and a rotor (2412). The electrical control cavity (23) is located on the radial side of the motor cavity (24), and the rear side of the electrical control cavity (23) and the rear side of the motor cavity (24) form a communicating space (25). The motor cavity (24) is also provided with a fan blade (242), which is mounted on the rotating shaft (2413) of the rotor (2412) as it rotates. When the fan blade (242) rotates with the rotating shaft (2413), the airflow passes through the electronic controller (1) in the electronic control cavity (23), then through the connecting space (25), and then through the stator (2411) and the rotor (2412) before being blown out.

4. The air guiding structure according to claim 3, characterized in that, The motor cavity (24) is also provided with a wind baffle (243), which is located on the rear side of the fan blade (242). The outer ring of the rear end of the wind baffle (243) forms a blocking part (2431), which forces the airflow to pass through the flow port (2432) in the middle. The fan blade (242) is a centrifugal fan blade (242), and the outer ring of the front end of the wind baffle (243) forms an arc-shaped guide part (2433).

5. The air guiding structure according to claim 4, characterized in that, The electrical control cavity (23) is located above the motor cavity (24); the fan blade (242) and the wind deflector (243) are located on the front side of the stator (2411).

6. The air guiding structure according to claim 5, characterized in that, The air guide structure also includes a connecting cover (5), which is located on the front side of the housing (2); the connecting cover (5) has a blocking edge (53) in the middle, which separates the air inlet space (55) and the air outlet space (56). The air inlet space (55) corresponds to the electrical control cavity (23), and the air outlet space (56) corresponds to the motor cavity (24). Lateral air inlet slots (57) are formed on the left and right sides of the air inlet space (55), and lateral air outlet slots (58) are formed on the left and right sides of the air outlet space (56). Both ends of the blocking edge (53) are formed with extension sections (54) facing the air outlet space (56), and a guide arc surface (541) is formed on the inner side of the end of the extension section (54).

7. The air guiding structure according to claim 6, characterized in that, The air guide structure also includes a gearbox (41), and the connecting cover (5) is disposed between the gearbox (41) and the housing (2). One side of the connecting cover (5) is sealed to the gearbox (41), and the other side of the connecting cover (5) is connected to the housing (2). The gearbox (41) is equipped with a gear set (42). The front end of the rotating shaft (2413) passes through the connecting cover (5) and extends into the gearbox (41). The input gear (421) in the gear set (42) is connected to the front end of the rotating shaft (2413) as it rotates. The output gear (422) in the gear set (42) is connected to the output shaft (43) as it rotates. The connecting cover (5) is also equipped with a forward air outlet groove (59) for receiving airflow to blow outwards from the gearbox (41).

8. The air guiding structure according to claim 7, characterized in that, The electronic controller (1) includes an electronic control box (11) and an electronic control board (12), the electronic control board (12) being installed in the electronic control box (11); the electronic control cavity (23) is provided with a left limiting part (231), a right limiting part (232), an upper limiting part (233), a lower limiting part (234) and a front limiting part (235) for limiting the electronic control box (11); the rear side of the housing (2) is provided with a rear cover (3), and the rear cover (3) is provided with a pressure plate (31) for pressing the electronic control box (11) on the rear side; The housing (2) and the rear cover (3) are made of plastic, while the connecting cover (5) and the gearbox (41) are made of metal.

9. The air guiding structure according to claim 8, characterized in that, The electronic control board (12) is also provided with a heat sink (123), and a part of the electronic control board (12) is installed in the opening of the electronic control box (11); The air guide plate (22) is disposed on the left and right sides of the electrical control box (11). The air guide plate (22) includes a first air guide plate (221) and a second air guide plate (222). The first air guide plate (221) is used to block at the rear, and the second air guide plate (222) is used to block at the bottom, so as to guide the airflow to the part of the electrical control plate (12) that protrudes from the electrical control box (11). The left and right sides of the electrical control box (11) are formed with pressing edges (111), and the upper limit part (233) is provided on the second air guide plate (222).

10. An integrated motor, characterized in that, It includes the air guiding structure as described in any one of claims 1-9.

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