Motor assembly and brushless motor
By setting up a fin set on the end cover of the motor assembly, the timely discharge of heat is solved, and the component damage caused by heat accumulation during motor operation is solved, ensuring the stable operation of the motor.
Patent Information
- Application Number
- CN202323438952.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2033-12-15
Smart Images
Figure CN222638275U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motors, in particular to a motor component and a brushless motor. Background Art
[0002] As is known to all, during the operation of the motor, heat will be generated, such as electrical heat from energized parts, friction heat from mechanical movement, etc. If the heat is not discharged in time, it may lead to excessive heat and corresponding component damage. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a motor assembly that can effectively dissipate heat for a motor in operation.
[0004] The utility model also provides a brushless motor with the motor assembly.
[0005] According to the first aspect of the present invention, the motor assembly includes: a motor housing, a rotating shaft, a stator sleeve and an end cover; the rotating shaft is installed in the motor housing, and the outer periphery of the rotating shaft is provided with a rotor sleeve, and the rotor sleeve is rotatably installed in the motor housing and can drive the rotating shaft to rotate relative to the motor housing; the stator sleeve is installed in the motor housing, and the rotor sleeve is installed in the stator sleeve, and the stator sleeve can drive the rotor winding to rotate through electromagnetic torque; the end cover is installed in the motor housing, and the end cover can cooperate with the motor housing to relatively fix the stator sleeve and the rotor sleeve; a fin group is provided on the end cover, and the fin group includes a plurality of heat dissipation fins extending from the center of the end cover toward the circumference of the end cover.
[0006] The motor assembly according to the embodiment of the utility model has at least the following beneficial effects: after the stator sleeve is energized, it will cooperate with the rotor sleeve to generate electromagnetic torque, and drive the rotor sleeve to rotate through the electromagnetic torque, thereby completing the rotation driving effect of the rotating shaft. When the stator sleeve, the rotor sleeve and the rotating shaft are in operation, heat will be generated, and the heat will be filled between the motor housing and the end cover. The end cover can perform heat exchange on its inner and outer sides through the fin group, so that the heat generated when the stator sleeve, the rotor sleeve and the rotating shaft are in operation can be discharged in time, thereby avoiding the problem of power reduction or even damage of the stator sleeve, the rotor sleeve and the rotating shaft due to excessive temperature. In addition, since the heat dissipation fins also extend toward the peripheral side of the end cover, it is also possible to better and quickly export the heat to the peripheral side of the end cover, thereby effectively avoiding the problem of heat accumulation.
[0007] According to some embodiments of the present invention, the rotating shaft passes through the end cover from the center of the end cover, and the heat dissipation fins are distributed around the rotating shaft.
[0008] According to some embodiments of the present invention, each of the heat dissipation fins extends in a spiral curve from the center of the end cover toward the circumference of the end cover.
[0009] According to some embodiments of the utility model, the heat dissipating fin has a first end at one end close to the center of the end cover, and has a second end at one end close to the peripheral side of the end cover; the length of the heat dissipating fin along the axial direction of the rotating shaft is the height of the heat dissipating fin, and the height of the first end is less than the height of the second end.
[0010] According to some embodiments of the present invention, the width dimension of the first end portion gradually increases toward a direction approaching the peripheral side of the end cover.
[0011] According to some embodiments of the present invention, the heat dissipation fins are equidistantly distributed around the center of the end cover.
[0012] According to some embodiments of the present invention, the motor housing is provided with a connecting ear for connecting to an external component.
[0013] According to some embodiments of the present invention, an end of the rotating shaft away from the end cover is connected to a heat exhaust fan, and the heat exhaust fan can drive air flow to blow through the stator assembly and the rotor assembly and flow to the end cover.
[0014] According to some embodiments of the utility model, a circuit board for electrical connection is connected to the inner wall of the end cover.
[0015] The brushless motor according to the second embodiment of the utility model includes the motor assembly according to the first embodiment of the utility model.
[0016] According to the brushless motor of the embodiment of the utility model, at least the following beneficial effects are achieved: after the stator set is energized, it will cooperate with the rotor set to generate electromagnetic torque, and drive the rotor set to rotate through the electromagnetic torque, thereby completing the rotational driving effect on the rotating shaft. When the stator set, the rotor set and the rotating shaft are in operation, heat will be generated, and the heat will be filled between the motor housing and the end cover. The end cover can perform heat exchange on its inner and outer sides through the fin group, so that the heat generated when the stator set, the rotor set and the rotating shaft are in operation can be discharged in time, thereby avoiding the problem of power reduction or even damage of the stator set, the rotor set and the rotating shaft due to excessive temperature. In addition, since the heat dissipation fins also extend toward the peripheral side of the end cover, it is also possible to quickly and better export the heat to the peripheral side of the end cover, thereby effectively avoiding the problem of heat accumulation.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 A schematic diagram of a motor assembly according to an embodiment of the present utility model;
[0020] Figure 2 for Figure 1 A schematic diagram of a cross section of a motor assembly is shown;
[0021] Figure 3 for Figure 1 A schematic diagram of an end cap of a motor assembly is shown;
[0022] Figure 4 for Figure 1 A schematic diagram of the inside of the end cover of the motor assembly is shown.
[0023] Reference numerals: motor housing 100; end cover 200; fin assembly 250; first end 253; heat dissipation fin 255; second end 257; connecting ear 300; circuit board 400; rotating shaft 500; stator assembly 700; rotor assembly 800; DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0028] Reference Figure 1 A motor assembly includes: a motor housing 100, a rotating shaft 500, a stator sleeve 700 and an end cover 200; the rotating shaft 500 is installed in the motor housing 100, and a rotor sleeve 800 is sleeved on the outer periphery of the rotating shaft 500, and the rotor sleeve 800 is rotatably installed in the motor housing 100 and can drive the rotating shaft 500 to rotate relative to the motor housing 100; the stator sleeve 700 is installed in the motor housing 100, and the rotor sleeve 800 is installed in the stator sleeve 700, and the stator sleeve 700 can drive the rotor winding to rotate through electromagnetic torque; the end cover 200 is installed in the motor housing 100, and the end cover 200 can cooperate with the motor housing 100 to relatively fix the stator sleeve 700 and the rotor sleeve 800; a fin group 250 is provided on the end cover 200, and the fin group 250 includes a plurality of heat dissipation fins 255 extending from the center of the end cover 200 toward the peripheral side of the end cover 200. After the stator set 700 is powered on, it will cooperate with the rotor set 800 to generate electromagnetic torque, and drive the rotor set 800 to rotate through the electromagnetic torque, thereby completing the rotation driving effect of the rotating shaft 500. When the stator set 700, the rotor set 800 and the rotating shaft 500 are in operation, heat will be generated, and the heat will be filled between the motor housing 100 and the end cover 200. The end cover 200 can perform heat exchange on both sides of its inner and outer sides through the fin set 250, so that the heat generated when the stator set 700, the rotor set 800 and the rotating shaft 500 are in operation can be discharged in time, thereby avoiding the problem of power reduction or even damage of the stator set 700, the rotor set 800 and the rotating shaft 500 due to excessive temperature. In addition, since the heat dissipation fins 255 also extend toward the peripheral side of the end cover 200, it can also better quickly export the heat to the peripheral side of the end cover 200, thereby effectively avoiding the problem of heat accumulation.
[0029] In certain embodiments, reference Figure 3The rotating shaft 500 passes through the end cover 200 from the center of the end cover 200, and each heat dissipation fin 255 is distributed around the rotating shaft 500. The heat dissipation fin 255 is distributed around the rotating shaft 500, so the heat dissipation fin 255 can quickly dissipate heat around the rotating shaft 500. The mechanical heat and friction heat generated by the rotating shaft 500 during the rotation process can be promptly discharged by the heat dissipation fin 255, thereby effectively avoiding the problem of failure of the rotating shaft 500 and its contact parts due to heat, thereby ensuring that the motor can operate smoothly and stably.
[0030] It is conceivable that the heat dissipation fins 255 may also be distributed in other ways, such as extending directly from the peripheral side of the end cover 200 toward the outside of the end cover 200. The specific implementation method may be adjusted accordingly according to actual needs and is not limited here.
[0031] In certain embodiments, reference Figure 3 Each heat dissipation fin 255 is spirally bent and extended from the center of the end cover 200 toward the circumference of the end cover 200. The spiral bending and extension method can effectively extend the heat dissipation fin 255 without increasing the size of the end cover 200, thereby effectively increasing the heat dissipation area of the heat dissipation fin 255 on the end cover 200, thereby better dissipating the heat of the end cover 200 and avoiding the problem of excessive heat and corresponding power reduction and damage.
[0032] In certain embodiments, reference Figure 3 The heat dissipation fin 255 has a first end 253 at one end close to the center of the end cover 200, and has a second end 257 at one end close to the peripheral side of the end cover 200; the length of the heat dissipation fin 255 along the axial direction of the rotating shaft 500 is the height of the heat dissipation fin 255, and the height of the first end 253 is less than the height of the second end 257. Since the first end 253 is less than the height of the second end 257, the first end 253 can be exposed to more airflow than the second end 257, thereby generating an air pressure difference between the first end 253 and the second end 257, thereby enabling the airflow to flow more quickly and smoothly on the end cover 200, and achieving a better heat dissipation effect.
[0033] Specifically, the height dimension of the first end portion 253 gradually decreases toward the circumferential side direction close to the end cover 200 .
[0034] It is conceivable that the first end 253 and the second end 257 may be at the same height. The specific implementation may be adjusted accordingly according to actual needs and is not limited here.
[0035] In certain embodiments, reference Figure 3, the width of the first end 253 gradually increases toward the direction close to the peripheral side of the end cover 200. As the width of the first end 253 gradually increases and the first end 253 gradually becomes shorter, the air at the first end 253 will flow toward the top of the first end 253. Since the end cover 200 and other motor components are located below the first end 253, the first end 253 guides the airflow to the top thereof, which can effectively improve the heat dissipation effect and thus avoid the problem of heat accumulation.
[0036] In certain embodiments, reference Figure 3 , each heat dissipation fin 255 is equidistantly distributed around the center of the end cover 200. Each heat dissipation fin 255 equidistantly distributed around the end cover 200 can effectively and evenly take the heat away from the end cover 200, thereby effectively avoiding the problem of heat accumulation in individual parts of the end cover 200, thereby ensuring the stability of the end cover 200.
[0037] In certain embodiments, reference Figure 2 The motor housing 100 is provided with a connection ear 300 for connecting to an external component. The connection ear 300 can connect the motor housing 100 and the external component, so that the motor can be smoothly installed and fixed.
[0038] In certain embodiments, reference Figure 1 The end of the rotating shaft 500 away from the end cover 200 is connected to a heat exhaust fan, which can drive the airflow to blow through the stator set 700 and the rotor set 800 and flow to the end cover 200. When the heat exhaust fan is started, the heat generated by the stator set 700, the rotor set 800 and the rotating shaft 500 during operation can be driven out of the end cover 200, so that the end cover 200 can discharge the heat through the fin set 250, thereby effectively improving the heat dissipation efficiency.
[0039] In certain embodiments, reference Figure 4 , a circuit board 400 for electrical connection is connected to the inner wall of the end cover 200. The circuit board 400 is directly mounted on the inner wall of the end cover 200, so the electric heat emitted by the circuit board 400 during operation will be quickly and directly emitted to the end cover 200. Therefore, when the fin group 250 performs heat dissipation at the end cover 200, the heat accumulated on the circuit board 400 can be quickly and directly dissipated, thereby effectively avoiding the problem of power reduction and damage of the circuit board 400 due to excessive heat.
[0040] The second aspect of the utility model provides an embodiment of a brushless motor, including the above motor assembly. After the stator set 700 is energized, it will cooperate with the rotor set 800 to generate electromagnetic torque, and drive the rotor set 800 to rotate through the electromagnetic torque, thereby completing the rotation drive effect on the rotating shaft 500. When the stator set 700, the rotor set 800 and the rotating shaft 500 are in operation, heat will be generated, and the heat will be filled between the motor housing 100 and the end cover 200. The end cover 200 can perform heat exchange on both sides of the inside and outside through the fin set 250, so that the heat generated by the stator set 700, the rotor set 800 and the rotating shaft 500 during operation can be discharged in time, thereby avoiding the problem of power reduction or even damage of the stator set 700, the rotor set 800 and the rotating shaft 500 due to excessive temperature. Furthermore, since the heat dissipation fins 255 also extend toward the peripheral side of the end cover 200, the heat can be quickly and better dissipated to the peripheral side of the end cover 200, thereby effectively avoiding the problem of heat accumulation.
[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0042] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A motor assembly, characterized in that: include: Motor housing (100); A rotating shaft (500) is installed in the motor housing (100); a rotor sleeve (800) is sleeved on the outer circumference of the rotating shaft (500); the rotor sleeve (800) is rotatably installed in the motor housing (100) and can drive the rotating shaft (500) to rotate relative to the motor housing (100); The stator set (700) is installed in the motor housing (100), and the rotor set (800) is installed in the stator set (700). The stator set (700) can drive the rotor set (800) to rotate through electromagnetic torque; An end cover (200) is mounted on the motor housing (100), and the end cover (200) can cooperate with the motor housing (100) to relatively fix the stator set (700) and the rotor set (800); a fin set (250) is provided on the end cover (200), and the fin set (250) includes a plurality of heat dissipation fins (255) extending from the center of the end cover (200) toward the peripheral side of the end cover (200).
2. The motor assembly according to claim 1, characterized in that: The rotating shaft (500) passes through the end cover (200) from the center of the end cover (200), and each of the heat dissipation fins (255) is distributed around the rotating shaft (500).
3. The motor assembly according to claim 2, characterized in that: Each of the heat dissipation fins (255) is spirally bent and extends from the center of the end cover (200) toward the circumference of the end cover (200).
4. The motor assembly according to claim 2, characterized in that: The heat dissipation fin (255) has a first end (253) at one end close to the center of the end cover (200), and has a second end (257) at one end close to the peripheral side of the end cover (200); the length of the heat dissipation fin (255) along the axial direction of the rotating shaft (500) is the height of the heat dissipation fin (255), and the height of the first end (253) is less than the height of the second end (257).
5. The motor assembly according to claim 4, characterized in that: The width dimension of the first end portion (253) gradually increases in a direction approaching the peripheral side of the end cover (200).
6. The motor assembly according to claim 2, characterized in that: The heat dissipation fins (255) are distributed equidistantly around the center of the end cover (200).
7. The motor assembly according to claim 1, characterized in that: The motor housing (100) is provided with a connecting ear (300) for connecting to an external component.
8. The motor assembly according to claim 1, wherein: An end of the rotating shaft (500) away from the end cover (200) is connected to a heat exhaust fan, and the heat exhaust fan can drive airflow to blow through the stator assembly (700) and the rotor assembly (800) and flow to the end cover (200).
9. The motor assembly according to claim 1, characterized in that: A circuit board (400) for electrical connection is connected to the inner wall of the end cover (200).
10. A brushless motor, characterized in that: A motor assembly comprising any one of claims 1 to 9.