Integrated high-speed brushless motor

Abstract

The integrated high-speed brushless motor comprises a front end cover, a rear end cover and a driving plate, the front end cover is detachably connected to an opening end of the rear end cover, the driving plate is fixedly connected to one end, far away from the front end cover, of the rear end cover, a stator is embedded in the rear end cover, and the stator is fixedly connected to the rear end cover. A motor shaft is rotatably connected in the front end cover and the rear end cover, one end of the motor shaft penetrates through the front end cover, a rotor assembly is fixedly connected to the position, corresponding to the stator, of the middle of the motor shaft, and a heat dissipation impeller is fixedly connected to the position, close to the rear end cover, of the motor shaft. According to the utility model, the driving plate and the motor are fixed together, and the heat dissipation impeller is additionally arranged on the motor shaft, so that the motor shaft rotates and drives the heat dissipation impeller to rotate to cool the motor and the driving plate at the same time, and therefore, modularization is realized, the overall structure is more compact, the assembly time is saved, and the assembly speed is improved.

Description

Technical Field

[0001] This disclosure relates to the field of brushless motor technology, and in particular to an integrated high-speed brushless motor. Background Technology

[0002] High-speed blenders and soy milk makers are food processing devices that rely on high-speed rotating blades to cut and blend large pieces of food, breaking down their cellular structure and allowing large molecules to escape, enabling the body to absorb nutrients more efficiently. Because of this processing characteristic, they can promote the absorption of nutrients by the body, and they are becoming increasingly popular in the market.

[0003] However, blenders and soy milk makers on the market all assemble the drive board and motor separately, which not only wastes a lot of space but also increases the additional assembly time. Utility Model Content

[0004] This disclosure provides an integrated high-speed brushless motor to solve the technical problems recognized by the inventors.

[0005] This disclosure provides an integrated high-speed brushless motor, including a front cover, a rear cover, and a drive plate. The front cover is detachably connected to the opening end of the rear cover. The drive plate is fixedly connected to the end of the rear cover away from the front cover. A stator is embedded in the rear cover. A motor shaft is rotatably connected to the front cover and the rear cover. One end of the motor shaft passes through the front cover. A rotor assembly is fixedly connected to the middle of the motor shaft at a position corresponding to the stator. A heat dissipation impeller is fixedly connected to the motor shaft near the rear cover.

[0006] Preferably, the rear end cover has multiple heat dissipation fins integrally formed near the drive plate.

[0007] Preferably, an air outlet is provided on the side of the rear cover near the heat dissipation fins.

[0008] Preferably, the ends of the front cover and the rear cover are provided with air inlets.

[0009] Preferably, the heat dissipation impeller has multiple blades fixedly connected to the side of the impeller near the stator and the drive plate.

[0010] Preferably, the rotor assembly includes rotor silicon steel sheets, which are sleeved on the outside of the motor shaft. Multiple magnets are embedded in the rotor silicon steel sheets, and the magnets are arranged in a circumferential array on the rotor silicon steel sheets.

[0011] Preferably, dynamic balancing blocks are respectively fitted at both ends of the motor shaft located on the rotor silicon steel sheet, and the two dynamic balancing blocks are respectively abutted against the rotor silicon steel sheet.

[0012] Preferably, bearings are embedded in the inner sides of the front end cover and the rear end cover respectively, and the motor shaft is rotatably connected to the front end cover and the rear end cover through the bearings.

[0013] Preferably, mounting holes are provided at corresponding positions of the front cover, rear cover, and drive plate, and fixing screws are threaded into the mounting holes.

[0014] The main advantages of this disclosure are as follows: This utility model achieves modularity by fixing the drive plate and the motor together, and by adding a heat dissipation impeller on the motor shaft, so that the motor shaft rotates while driving the heat dissipation impeller to rotate, thereby cooling the motor and the drive plate. This makes the overall structure more compact, saves assembly time, and increases assembly speed.

[0015] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a brushless motor according to an embodiment of the present disclosure;

[0018] Figure 2 This is a cross-sectional view of the brushless motor structure according to an embodiment of this disclosure;

[0019] Figure 3 This is an exploded view of the brushless motor structure according to an embodiment of this disclosure;

[0020] Figure 4 This is an exploded view of the rotor assembly structure according to an embodiment of this disclosure;

[0021] Icons: 1-Front end cover; 2-Rear end cover; 201-Air outlet; 202-Heat dissipation fins; 3-Drive board; 4-Stator; 5-Rotor assembly; 501-Rotor silicon steel sheet; 502-Magnet; 503-Dynamic balance block; 6-Motor shaft; 601-Bearing; 7-Heat dissipation impeller; 701-Blade; 8-Air inlet; 901-Mounting hole; 902-Fixing screw. Detailed Implementation

[0022] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0023] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0024] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and 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 of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0026] Example

[0027] like Figure 1-4 As shown, this embodiment provides an integrated high-speed brushless motor, including a front cover 1, a rear cover 2, and a drive plate 3. The front cover 1 and the rear cover 2 are fixed by screws, and the front cover 1 and the rear cover 2 form cavities for installing internal structures. The drive plate 3 is fixedly installed on the outer side of the rear cover 2 away from the front cover 1 by screws. A stator 4 is embedded inside the rear cover 2. A motor shaft 6 is rotatably connected inside the front cover 1 and the rear cover 2. One end of the motor shaft 6 passes through the front cover 1. Specifically, a bearing 601 is embedded inside the front cover 1 and the rear cover 2. The motor shaft 6 is rotatably connected to the middle of the inner side of the front cover 1 and the rear cover 2 through the bearing 601. A rotor assembly 5 is fixedly installed at the middle of the motor shaft 6 corresponding to the stator 4. A heat dissipation impeller 7 is fixedly connected to the motor shaft 6 near the rear cover 2. When the stator 4 is powered on, it drives the rotor assembly 5 to rotate, which in turn drives the motor shaft 6 to rotate. The rotation of the motor shaft 6 drives the cooling impeller 7 to rotate, and the rotation of the cooling impeller 7 dissipates heat from the stator 4 and the drive plate 3.

[0028] Specifically, the rear end cover 2 has multiple heat dissipation fins 202 integrally formed near the drive plate 3. The drive plate 3 integrates MOSFETs, which are the areas with the most severe heat generation. By integrally forming multiple heat dissipation fins 202 near the MOSFETs on the rear end cover 2, the heat from the drive plate 3 can be transferred through the heat dissipation fins 202, thereby accelerating the heat dissipation speed.

[0029] Furthermore, an air outlet 201 is provided on the side of the rear cover 2 near the heat dissipation fins 202. The heat dissipation fins 202 conduct heat from the drive plate 3, and then the heat is blown out from the air outlet 201 by the rotation of the heat dissipation impeller 7, thereby accelerating the heat dissipation efficiency and preventing the drive plate 3 from overheating.

[0030] Furthermore, air inlets 8 are provided at the ends of the front cover 1 and the rear cover 2. The design of one air outlet 201, two air inlets 8 and their corresponding heat dissipation impellers 7 can not only reduce the temperature inside the motor, but also reduce the heat at the MOSFET where the drive board 3 generates the most heat as the fan drives it.

[0031] Furthermore, multiple blades 701 are fixedly connected to the side of the heat dissipation impeller 7 near the stator 4 and the drive plate 3. Blades 701 are provided on both sides of the heat dissipation impeller 7. When the heat dissipation impeller 7 rotates, the blades 701 drive the internal airflow to form centrifugal wind, which discharges the heat inside the motor and the heat dissipation fins 202 from the air outlet 201, thereby improving the heat dissipation efficiency.

[0032] Specifically, the rotor assembly 5 includes a rotor silicon steel sheet 501, which is sleeved on the outside of the motor shaft 6. Multiple magnets 502 are embedded within the rotor silicon steel sheet 501, arranged in a circumferential array on the rotor silicon steel sheet 501. In this embodiment, the magnets 502 within the rotor silicon steel sheet 501 cause the rotor silicon steel sheet 501 to rotate, thereby causing the motor shaft 6 to rotate.

[0033] Furthermore, dynamic balancing blocks 503 are respectively fitted at both ends of the motor shaft 6 and the rotor silicon steel sheet 501, with the two dynamic balancing blocks 503 respectively abutting against the rotor silicon steel sheet 501. The two dynamic balancing blocks 503 limit the movement of the rotor silicon steel sheet 501, preventing it from moving on the motor shaft 6 and ensuring more stable rotation.

[0034] Furthermore, mounting holes 901 are respectively provided at corresponding positions of the front cover 1, the rear cover 2, and the drive plate 3, and fixing screws 902 are threaded into the mounting holes 901. The front cover 1, the rear cover 2, and the drive plate 3 are fixed together by the fixing screws 902 to form an integrated structure, which makes the structure more stable.

[0035] The working principle of this utility model is as follows: The drive plate 3 is fixed to the rear end cover 2 by fixing screws 902, so that the drive plate 3 and the rear end cover 2 fit tightly. When the motor shaft 6 works, it drives the heat dissipation impeller 7 to rotate. The heat dissipation impeller 7 is provided with blades 701 on both sides, which discharges the heat from the winding of the stator 4 and the heat dissipation fins 202 of the rear end cover 2 from the air outlet 201 on the side of the rear end cover 2, thereby dissipating heat from the motor and the drive plate 3. The blades 701 on both sides of the heat dissipation impeller 7 dissipate heat from the drive plate 3 and the stator 4 respectively. The blades 701 on the front and rear sides of the heat dissipation impeller 7 can form two air channels inside the motor. The two air channels do not interfere with each other, ensuring that the stator 4 and the drive plate 3 of the motor are directly cooled by cold air. After cooling, the two air channels converge and are discharged from the air outlet 201. In contrast, in traditional air channel cooling, due to the centrifugal effect of the impeller, an air channel is formed inside. The cold air first passes through the heat dissipation fins of the drive plate 3 and then enters the motor to dissipate heat from the stator 4. When cold air passes through the heat sink, the air carries away the heat. The air that enters the stator 4 is actually heated air, which reduces the overall heat dissipation efficiency of the motor. The drive board 3 is directly fixed to the motor, saving installation space and installation steps, achieving two goals at once.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. An integrated high-speed brushless motor, characterized in that, include: The device comprises a front cover, a rear cover, and a drive plate. The front cover is detachably connected to the open end of the rear cover. The drive plate is fixedly connected to the end of the rear cover away from the front cover. A stator is embedded in the rear cover. A motor shaft is rotatably connected to the front cover and the rear cover. One end of the motor shaft passes through the front cover. A rotor assembly is fixedly connected to the middle of the motor shaft at a position corresponding to the stator. A heat dissipation impeller is fixedly connected to the motor shaft near the rear cover.

2. The integrated high-speed brushless motor according to claim 1, characterized in that, The rear cover has multiple heat dissipation fins integrally formed near the drive plate.

3. The integrated high-speed brushless motor according to claim 2, characterized in that, An air outlet is provided on the side of the rear cover near the heat dissipation fins.

4. The integrated high-speed brushless motor according to claim 3, characterized in that, Air inlets are provided at the ends of the front and rear covers.

5. The integrated high-speed brushless motor according to claim 1, characterized in that, The heat dissipation impeller has multiple blades fixedly connected to its side near the stator and drive plate.

6. The integrated high-speed brushless motor according to claim 1, characterized in that, The rotor assembly includes rotor silicon steel sheets, which are sleeved on the outside of the motor shaft. Multiple magnets are embedded in the rotor silicon steel sheets, and the magnets are arranged in a circumferential array on the rotor silicon steel sheets.

7. The integrated high-speed brushless motor according to claim 6, characterized in that, The motor shaft is fitted with dynamic balancing blocks at both ends of the rotor silicon steel sheet, and the two dynamic balancing blocks are respectively abutted against the rotor silicon steel sheet.

8. The integrated high-speed brushless motor according to claim 1, characterized in that, Bearings are embedded in the inner sides of the front and rear covers respectively, and the motor shaft is rotatably connected to the front and rear covers through the bearings.

9. The integrated high-speed brushless motor according to claim 1, characterized in that, Mounting holes are provided at corresponding positions of the front cover, rear cover, and drive plate, and fixing screws are threaded into the mounting holes.

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